diff --git a/README.md b/README.md
index e588c2a..4f76b69 100644
--- a/README.md
+++ b/README.md
@@ -324,19 +324,21 @@ This is where the following section comes into play:
 
 ```yaml
 glue:
-    top:
-        left: <anchor>
-        right: <anchor> | num
-    bottom:
-        left: <anchor>
-        right: <anchor> | num
-    waypoints:
-        - percent: num
-          width: num | [num_left, num_right]
-        - ...
-    extra:
-        - <primitive shape>
-        - ...
+    glue_name:
+        top:
+            left: <anchor>
+            right: <anchor> | num
+        bottom:
+            left: <anchor>
+            right: <anchor> | num
+        waypoints:
+            - percent: num
+            width: num | [num_left, num_right]
+            - ...
+        extra:
+            - <primitive shape>
+            - ...
+    ...
 ```
 
 ...where an `<anchor>` is (mostly) the same as it was for points:
@@ -348,7 +350,7 @@ rotate: num # default = 0
 relative: boolean # default = true
 ```
 
-The section's `top` and `bottom` are both formatted the same, and describe the center line's top and bottom intersections, respectively.
+The `top` and `bottom` fields in each glue's section are both formatted the same, and describe the center line's top and bottom intersections, respectively.
 In a one-piece case, this means that we project a line from a left-side reference point (optionally rotated and translated), another from the right, and converge them to where they meet.
 Split designs can specify `right` as a single number to mean the x coordinate where the side should be "cut off".
 The `relative` flag means that the `shift` is interpreted in layout size units instead of mms (see below).
@@ -366,7 +368,7 @@ If this is insufficient (maybe because it would leave holes), the `waypoints` ca
 Here, `percent` means the y coordinate along the centerline (going from the top intersection to the bottom intersection), and `width` means the offset on the x axis.
 
 If this is somehow _still_ insufficient (or there were problems with the binding phase), we can specify additional primitive shapes under the `extra` key (similarly to how we would use them in the exports; see below).
-These are then added to what we have so far to finish out the glue.
+These are then added to what we have so far to finish out the glue. TODO!
 
 <hr />
 
@@ -381,6 +383,8 @@ Now we can configure what we want to "export" as outlines from this phase, given
         - `middle` means an "ideal" version of the glue (meaning that instead of the `outline.glue` we defined above, we get `both` - `left` - `right`, so the _exact_ middle piece we would have needed to glue everything together
         - `both` means both sides, held together by the glue
         - `glue` is just the raw glue shape we defined above under `outline.glue`
+    - `tag: <array of tags>` : optional tags to filter which points to consider in this step, where tags can be specified as key-level attributes.
+    - `glue: <glue_name>` : the name of the glue to use, if applicable
     - `size: num | [num_x, num_y]` : the width/height of the rectangles to lay onto the points. Note that the `relative` flag for the glue declaration above meant this size as the basis of the shift. So during a `keys` layout with a size of 18, for example, a relative shift of `[.5, .5]` actually means `[9, 9]` in mms.
     - `corner: num # default = 0)` : corner radius of the rectangles
     - `bevel: num # default = 0)` : corner bevel of the rectangles, can be combined with rounding
@@ -395,7 +399,7 @@ Now we can configure what we want to "export" as outlines from this phase, given
     - `radius: num` : the radius of the circle
 - `polygon` : an independent polygon primitive. Parameters:
     - `points: [<point_def>, ...]` : the points of the polygon. Each `<point_def>` can have its own `ref` and `shift`, all of which are still the same as above. If `ref` is unspecified, the previous point's will be assumed. For the first, it's `[0, 0]` by default.
-- `ref` : a previously defined outline, see below.
+- `outline` : a previously defined outline, see below.
     - `name: outline_name` : the name of the referenced outline
 
 Using these, we define exports as follows:
diff --git a/src/assert.js b/src/assert.js
index 111e0ba..75e2cce 100644
--- a/src/assert.js
+++ b/src/assert.js
@@ -1,4 +1,5 @@
 const m = require('makerjs')
+const u = require('./utils')
 const Point = require('./point')
 
 const assert = exports.assert = (exp, msg) => {
@@ -79,11 +80,53 @@ exports.anchor = (raw, name, points={}, check_unexpected=true, default_point=new
         point.shift(xyval, true)
     }
     if (raw.rotate !== undefined) {
-        let rot = sane(raw.rotate || 0, name + '.rotate', 'number')
-        if (point.meta.mirrored) {
-            rot = -rot
-        }
-        point.r += rot
+        point.r += sane(raw.rotate || 0, name + '.rotate', 'number')
     }
     return point
+}
+
+const extend_pair = exports.extend_pair = (to, from) => {
+    const to_type = type(to)
+    const from_type = type(from)
+    if (from === undefined || from === null) return to
+    if (from === '!!unset') return undefined
+    if (to_type != from_type) return from
+    if (from_type == 'object') {
+        const res = u.deepcopy(to)
+        for (const key of Object.keys(from)) {
+            res[key] = extend_pair(to[key], from[key])
+        }
+        return res
+    } else if (from_type == 'array') {
+        const res = u.deepcopy(to)
+        for (const [i, val] of from.entries()) {
+            res[i] = extend_pair(res[i], val)
+        }
+        return res
+    } else return from
+}
+
+exports.extend = (...args) => {
+    let res = args[0]
+    for (const arg of args) {
+        if (res == arg) continue
+        res = extend_pair(res, arg)
+    }
+    return res
+}
+
+const inherit = exports.inherit = (config, name_prefix, name, set) => {
+    let result = u.deepcopy(config)
+    if (config.extends !== undefined) {
+        let list = config.extends
+        if (type(list) !== 'array') list = [list]
+        for (const item of list) {
+            const other = set[item]
+            assert(other, `Field "${name_prefix}.${name}" does not name a valid target!`)
+            result = extend_pair(inherit(other, name_prefix, config.extends, set), result)
+
+        }
+        delete result.extends
+    }
+    return result
 }
\ No newline at end of file
diff --git a/src/outline.js b/src/outline.js
index cce3a3e..51584ea 100644
--- a/src/outline.js
+++ b/src/outline.js
@@ -35,27 +35,32 @@ const layout = exports._layout = (config = {}, points = {}) => {
 
     // Glue config sanitization
 
-    a.detect_unexpected(config, 'outline.glue', ['top', 'bottom', 'waypoints', 'extra'])
-
+    const parsed_glue = u.deepcopy(a.sane(config, 'outline.glue', 'object'))
+    for (let [gkey, gval] of Object.entries(parsed_glue)) {
+        gval = a.inherit(gval, 'outline.glue', gkey, config)
+        a.detect_unexpected(gval, `outline.glue.${gkey}`, ['top', 'bottom', 'waypoints', 'extra'])
     
-
-    for (const y of ['top', 'bottom']) {
-        a.detect_unexpected(config[y], `outline.glue.${y}`, ['left', 'right'])
-        config[y].left = relative_anchor(config[y].left, `outline.glue.${y}.left`, points)
-        if (a.type(config[y].right) != 'number') {
-            config[y].right = relative_anchor(config[y].right, `outline.glue.${y}.right`, points)
+        for (const y of ['top', 'bottom']) {
+            a.detect_unexpected(gval[y], `outline.glue.${gkey}.${y}`, ['left', 'right'])
+            gval[y].left = relative_anchor(gval[y].left, `outline.glue.${gkey}.${y}.left`, points)
+            if (a.type(gval[y].right) != 'number') {
+                gval[y].right = relative_anchor(gval[y].right, `outline.glue.${gkey}.${y}.right`, points)
+            }
         }
+    
+        gval.waypoints = a.sane(gval.waypoints || [], `outline.glue.${gkey}.waypoints`, 'array')
+        let wi = 0
+        gval.waypoints = gval.waypoints.map(w => {
+            const name = `outline.glue.${gkey}.waypoints[${++wi}]`
+            a.detect_unexpected(w, name, ['percent', 'width'])
+            w.percent = a.sane(w.percent, name + '.percent', 'number')
+            w.width = a.wh(w.width, name + '.width')
+            return w
+        })
+
+        parsed_glue[gkey] = gval
     }
 
-    config.waypoints = a.sane(config.waypoints || [], 'outline.glue.waypoints', 'array')
-    let wi = 0
-    config.waypoints = config.waypoints.map(w => {
-        const name = `outline.glue.waypoints[${++wi}]`
-        a.detect_unexpected(w, name, ['percent', 'width'])
-        w.percent = a.sane(w.percent, name + '.percent', 'number')
-        w.width = a.wh(w.width, name + '.width')
-        return w
-    })
 
     // TODO: handle glue.extra (or revoke it from the docs)
 
@@ -63,8 +68,12 @@ const layout = exports._layout = (config = {}, points = {}) => {
 
         // Layout params sanitization
 
-        a.detect_unexpected(params, `${export_name}`, expected.concat(['side', 'size', 'corner', 'bevel', 'bound']))
+        a.detect_unexpected(params, `${export_name}`, expected.concat(['side', 'tags', 'glue', 'size', 'corner', 'bevel', 'bound']))
         const side = a.in(params.side, `${export_name}.side`, ['left', 'right', 'middle', 'both', 'glue'])
+        const tags = a.sane(params.tags || [], `${export_name}.tags`, 'array')
+        const default_glue_name = Object.keys(parsed_glue)[0]
+        const glue_def = parsed_glue[a.sane(params.glue || default_glue_name, `${export_name}.glue`, 'string')]
+        a.assert(glue_def, `Field "${export_name}.glue" does not name a valid glue!`)
         const size = a.wh(params.size, `${export_name}.size`)
         const corner = a.sane(params.corner || 0, `${export_name}.corner`, 'number')
         const bevel = a.sane(params.bevel || 0, `${export_name}.bevel`, 'number')
@@ -77,6 +86,14 @@ const layout = exports._layout = (config = {}, points = {}) => {
         if (['left', 'right', 'middle', 'both'].includes(side)) {
             for (const [pname, p] of Object.entries(points)) {
 
+                // filter by tags, if necessary
+                if (tags.length) {
+                    const source = p.meta.tags || {}
+                    const point_tags = Object.keys(source).filter(t => !!source[t])
+                    const relevant = point_tags.some(pt => tags.includes(pt))
+                    if (!relevant) continue
+                }
+
                 let from_x = -size[0] / 2, to_x = size[0] / 2
                 let from_y = -size[1] / 2, to_y = size[1] / 2
 
@@ -130,15 +147,15 @@ const layout = exports._layout = (config = {}, points = {}) => {
 
                 return u.line(from.p, to.p)
             }
-    
-            const tll = get_line(config.top.left)
-            const trl = get_line(config.top.right)
+
+            const tll = get_line(glue_def.top.left)
+            const trl = get_line(glue_def.top.right)
             const tip = m.path.converge(tll, trl)
             const tlp = u.eq(tll.origin, tip) ? tll.end : tll.origin
             const trp = u.eq(trl.origin, tip) ? trl.end : trl.origin
     
-            const bll = get_line(config.bottom.left)
-            const brl = get_line(config.bottom.right)
+            const bll = get_line(glue_def.bottom.left)
+            const brl = get_line(glue_def.bottom.right)
             const bip = m.path.converge(bll, brl)
             const blp = u.eq(bll.origin, bip) ? bll.end : bll.origin
             const brp = u.eq(brl.origin, bip) ? brl.end : brl.origin
@@ -146,7 +163,7 @@ const layout = exports._layout = (config = {}, points = {}) => {
             const left_waypoints = []
             const right_waypoints = []
 
-            for (const w of config.waypoints) {
+            for (const w of glue_def.waypoints) {
                 const percent = w.percent / 100
                 const center_x = tip[0] + percent * (bip[0] - tip[0])
                 const center_y = tip[1] + percent * (bip[1] - tip[1])
@@ -157,7 +174,7 @@ const layout = exports._layout = (config = {}, points = {}) => {
             }
             
             let waypoints
-            const is_split = a.type(config.top.right) == 'number'
+            const is_split = a.type(glue_def.top.right) == 'number'
             if (is_split) {
                 waypoints = [tip, tlp]
                 .concat(left_waypoints)
@@ -198,7 +215,7 @@ exports.parse = (config = {}, points = {}) => {
         for (const part of parts) {
             const name = `outline.exports.${key}[${++index}]`
             const expected = ['type', 'operation']
-            part.type = a.in(part.type, `${name}.type`, ['keys', 'rectangle', 'circle', 'polygon', 'ref'])
+            part.type = a.in(part.type, `${name}.type`, ['keys', 'rectangle', 'circle', 'polygon', 'outline'])
             part.operation = a.in(part.operation || 'add', `${name}.operation`, ['add', 'subtract', 'intersect', 'stack'])
 
             let op = u.union
@@ -240,10 +257,12 @@ exports.parse = (config = {}, points = {}) => {
                     }
                     arg = u.poly(parsed_points)
                     break
-                case 'ref':
+                case 'outline':
                     a.assert(outlines[part.name], `Field "${name}.name" does not name an existing outline!`)
                     arg = u.deepcopy(outlines[part.name])
                     break
+                default:
+                    throw new Error(`Field "${name}.type" (${part.type}) does not name a valid outline part type!`)
             }
 
             result = op(result, arg)
diff --git a/src/pcb.js b/src/pcb.js
index 711aa79..d5fe20b 100644
--- a/src/pcb.js
+++ b/src/pcb.js
@@ -143,6 +143,8 @@ const makerjs2kicad = exports._makerjs2kicad = (model, layer='Edge.Cuts') => {
 
 const footprint_types = require('./footprints')
 const footprint = exports._footprint = (config, name, points, net_indexer, point) => {
+
+    if (config === false) return ''
     
     // config sanitization
     a.detect_unexpected(config, name, ['type', 'anchor', 'nets', 'params'])
diff --git a/src/points.js b/src/points.js
index 69b7e4e..c27156d 100644
--- a/src/points.js
+++ b/src/points.js
@@ -2,35 +2,6 @@ const m = require('makerjs')
 const u = require('./utils')
 const a = require('./assert')
 
-const extend_pair = exports._extend_pair = (to, from) => {
-    const to_type = a.type(to)
-    const from_type = a.type(from)
-    if (from === undefined || from === null) return to
-    if (to_type != from_type) return from
-    if (from_type == 'object') {
-        const res = u.deepcopy(to)
-        for (const key of Object.keys(from)) {
-            res[key] = extend_pair(to[key], from[key])
-        }
-        return res
-    } else if (from_type == 'array') {
-        const res = u.deepcopy(to)
-        for (const [i, val] of from.entries()) {
-            res[i] = extend_pair(res[i], val)
-        }
-        return res
-    } else return from
-}
-
-const extend = exports._extend = (...args) => {
-    let res = args[0]
-    for (const arg of args) {
-        if (res == arg) continue
-        res = extend_pair(res, arg)
-    }
-    return res
-}
-
 const push_rotation = exports._push_rotation = (list, angle, origin) => {
     let candidate = origin
     for (const r of list) {
@@ -139,7 +110,7 @@ const render_zone = exports._render_zone = (zone_name, zone, anchor, global_key)
             asym: 'both'
         }
         for (const row of Object.keys(actual_rows)) {
-            const key = extend(
+            const key = a.extend(
                 default_key,
                 global_key,
                 zone_wide_key,
@@ -148,7 +119,8 @@ const render_zone = exports._render_zone = (zone_name, zone, anchor, global_key)
                 col.rows[row] || {}
             )
 
-            key.name = key.name || `${col_name}_${row}`
+            key.name = key.name || `${zone_name}_${col_name}_${row}`
+            key.colrow = `${col_name}_${row}`
             key.shift = a.xy(key.shift, `${key.name}.shift`)
             key.rotate = a.sane(key.rotate, `${key.name}.rotate`, 'number')
             key.padding = a.sane(key.padding, `${key.name}.padding`, 'number')
@@ -195,8 +167,6 @@ const render_zone = exports._render_zone = (zone_name, zone, anchor, global_key)
     return points
 }
 
-
-
 exports.parse = (config = {}) => {
 
     a.detect_unexpected(config, 'points', ['zones', 'key', 'rotate', 'mirror'])
@@ -207,7 +177,11 @@ exports.parse = (config = {}) => {
 
     const zones = a.sane(config.zones || {}, 'points.zones', 'object')
     const global_key = a.sane(config.key || {}, 'points.key', 'object')
-    for (const [zone_name, zone] of Object.entries(zones)) {
+    for (let [zone_name, zone] of Object.entries(zones)) {
+
+        // handle zone-level `extends` clauses
+        zone = a.inherit(zone, 'points.zones', zone_name, zones)
+
         const anchor = a.anchor(zone.anchor || {}, `points.zones.${zone_name}.anchor`, points)
         points = Object.assign(points, render_zone(zone_name, zone, anchor, global_key))
     }
@@ -238,9 +212,11 @@ exports.parse = (config = {}) => {
         for (const [name, p] of Object.entries(points)) {
             if (p.meta.asym == 'left') continue
             const mp = p.clone().mirror(axis)
-            mp.meta = extend(mp.meta, mp.meta.mirror || {})
+            mp.meta = a.extend(mp.meta, mp.meta.mirror || {})
             mp.meta.mirrored = true
-            mirrored_points[`mirror_${name}`] = mp
+            const new_name = `mirror_${name}`
+            mp.meta.name = new_name
+            mirrored_points[new_name] = mp
             if (p.meta.asym == 'right') {
                 p.meta.skip = true
             }
diff --git a/test/fixtures/absolem.yaml b/test/fixtures/absolem.yaml
index 430c429..d4a1751 100644
--- a/test/fixtures/absolem.yaml
+++ b/test/fixtures/absolem.yaml
@@ -10,9 +10,9 @@ points:
           rows:
             bottom:
             home:
-              bind: [,10]
+              bind: [,15]
             top:
-              bind: [,10]
+              bind: [,15]
           key:
             column_net: P1
         ring:
@@ -61,21 +61,35 @@ points:
       rows:
         bottom:
           bind: [10]
-          row_net: P7
+          row_net: P16
           mirror:
-            row_net: P16
+            row_net: P7
         home:
           bind: [10]
-          row_net: P6
+          row_net: P14
           mirror:
-            row_net: P14
+            row_net: P6
         top:
-          row_net: P5
+          row_net: P15
           mirror:
-            row_net: P15
+            row_net: P5
+      key:
+        tags:
+          s19: true
+    choc:
+      extends: matrix
+      columns:
+        pinky:
+          stagger: 1
+          origin: [7, -8]
+      key:
+        padding: 18
+        tags:
+          s19: false
+          s18: true
     thumbfan:
       anchor:
-        ref: inner_bottom
+        ref: matrix_inner_bottom
         shift: [-7, -19]
       columns:
         near:
@@ -84,9 +98,11 @@ points:
           origin: [9.5, -9]
           rows:
             thumb:
-              bind: [10,1,,]
+              bind: [10,5,,]
           key:
             column_net: P2
+            tags:
+              classic: true
         home:
           spread: 21.25
           rotate: -28
@@ -96,17 +112,71 @@ points:
               bind: [,10,,15]
           key:
             column_net: P3
+            tags:
+              classic: true
+              uniform: true
         far:
           rows:
             thumb:
               bind: [-1,,,5]
           key:
             column_net: P4
+            tags:
+              classic: true
       rows:
         thumb:
-          row_net: P8
+          row_net: P10
           mirror:
-            row_net: P10
+            row_net: P8
+    unifar:
+      anchor:
+        ref: thumbfan_home_thumb
+      columns:
+        home_again:
+          rotate: -28
+          origin: [9.5, -9]
+          key:
+            skip: true
+        far1u:
+          rows:
+            thumb:
+              bind: [-1,,,5]
+          key:
+            column_net: P4
+            footprints:
+              diode: false
+            tags:
+              uniform: true
+      rows:
+        thumb:
+          row_net: P10
+          mirror:
+            row_net: P8
+    uninear:
+      anchor:
+        ref: thumbfan_home_thumb
+      columns:
+        home_again:
+          spread: -19
+          rotate: 28
+          origin: [-9.5, -9]
+          key:
+            skip: true
+        near1u:
+          rows:
+            thumb:
+              bind: [10,5,,]
+          key:
+            column_net: P2
+            footprints:
+              diode: false
+            tags:
+              uniform: true
+      rows:
+        thumb:
+          row_net: P10
+          mirror:
+            row_net: P8
   key:
     bind: [0,0,0,0]
     footprints:
@@ -114,95 +184,145 @@ points:
         type: mx
         nets:
           from: '!column_net'
-          to: '!name'
+          to: '!colrow'
       diode:
         type: diode
         anchor:
           rotate: 90
-          shift: [-8, 0]
+          shift: [8, 0]
         nets:
           from: '!name'
           to: '!row_net'
+    mirror:
+      footprints:
+        mx:
+          nets:
+            from: '!colrow'
+            to: '!column_net'
   rotate: -20
   mirror:
-    ref: pinky_home
+    ref: matrix_pinky_home
     distance: 223.7529778
 outline:
   glue:
-    top:
-      left:
-        ref: inner_top
-        shift: [, 0.5]
-      right:
-        ref: mirror_inner_top
-        shift: [, 0.5]
-    bottom:
-      left:
-        ref: far_thumb
-        shift: [0.5, 0]
-        rotate: 90
-      right:
-        ref: mirror_far_thumb
-        shift: [0.5, 0]
-        rotate: 90
-    waypoints:
-      - percent: 50
-        width: 50
-      - percent: 90
-        width: 25
+    classic:
+      top:
+        left:
+          ref: matrix_inner_top
+          shift: [, 0.5]
+        right:
+          ref: mirror_matrix_inner_top
+          shift: [, 0.5]
+      bottom:
+        left:
+          ref: thumbfan_far_thumb
+          shift: [0.5, 0]
+          rotate: 90
+        right:
+          ref: mirror_thumbfan_far_thumb
+          shift: [0.5, 0]
+          rotate: 90
+      waypoints:
+        - percent: 50
+          width: 50
+        - percent: 90
+          width: 25
+    uniform:
+      extends: classic
+      bottom:
+        left:
+          ref: unifar_far1u_thumb
+        right:
+          ref: mirror_unifar_far1u_thumb
+    choc:
+      extends: classic
+      top:
+        left:
+          ref: choc_inner_top
+        right:
+          ref: mirror_choc_inner_top
+    uniform_choc:
+      extends:
+        - uniform
+        - choc
   exports:
-    outline:
+    classic_outline:
       - type: keys
         side: both
-        size: 18
+        tags:
+          - s19
+          - classic
+        glue: classic
+        size: 13.5
         corner: .5
-    holes:
+    uniform_outline:
       - type: keys
-        operation: stack
         side: both
+        tags:
+          - s19
+          - uniform
+        glue: uniform
+        size: 13.5
+        corner: .5
+    intersected_outline:
+      - type: outline
+        name: classic_outline
+      - type: outline
+        name: uniform_outline
+        operation: intersect
+    classic_holes:
+      - type: keys
+        side: both
+        tags:
+          - s19
+          - classic
+        glue: classic
         size: 14
         bound: false
-    middle:
+    classic_middle:
       - type: keys
-        operation: stack
         side: middle
+        tags:
+          - s19
+          - classic
+        glue: classic
         size: 24
       - type: rectangle
         size: [25, 5]
-        ref: home_thumb
+        ref: thumbfan_home_thumb
         shift: [0, 12]
       - type: rectangle
         size: [25, 5]
-        ref: far_thumb
+        ref: thumbfan_far_thumb
         shift: [25, 12]
       - type: rectangle
         size: [25, 5]
-        ref: mirror_home_thumb
+        ref: mirror_thumbfan_home_thumb
         shift: [25, 12]
       - type: rectangle
         size: [25, 5]
-        ref: mirror_far_thumb
+        ref: mirror_thumbfan_far_thumb
         shift: [0, 12]
-      - type: ref
-        name: outline
+      - type: outline
+        name: classic_outline
         operation: intersect
     complex:
-      - type: ref
-        name: outline
-      - type: ref
-        name: holes
+      - type: outline
+        name: classic_outline
+      - type: outline
+        name: classic_holes
         operation: stack
-      - type: ref
-        name: middle
+      - type: outline
+        name: classic_middle
         operation: stack
 pcb:
-  edge: outline
+  edge: intersected_outline
   footprints:
     mcu:
       type: promicro
       anchor:
         ref:
-          - inner_top
-          - mirror_inner_top
+          - choc_inner_top
+          - mirror_choc_inner_top
         shift: [0, -20]
         rotate: 270