diff --git a/_data/core-properties.yml b/_data/core-properties.yml
index 30ef9460..6b2fcbab 100644
--- a/_data/core-properties.yml
+++ b/_data/core-properties.yml
@@ -212,6 +212,14 @@
         </mrow>"
       en: ???
 
+- property: shape
+  type: geometry
+  applicability: mo
+  comment: there are many shape characters in unicode, including filled and shaded ones. Some have mathematical meaning. The shape property is used when they are meant to be used as a geometric shape.
+  examples:
+    - mathml: "<mo intent=':shape'>▭</mo><mi>A</mi><mi>B</mi><mi>C</mi><mi>D</mi>"
+      en: rectangle A B C D
+
 - property: chemical-element
   type: chemistry
   examples:
diff --git a/_data/core.yml b/_data/core.yml
index cdce03e2..cef326fe 100644
--- a/_data/core.yml
+++ b/_data/core.yml
@@ -22,7 +22,7 @@ defaultfixity:
        - concept: measured-angle
          characters: [∡]
        - concept: minus
-         characters: [-, −]
+         characters: ["-", "−"]
        - concept: not
          characters: [¬]
        - concept: partial-derivative
@@ -35,11 +35,17 @@ defaultfixity:
          characters: [∄]
        - concept: there-exists
          characters: [∃]
+       - concept: number-of
+         characters: ["#"]
+       - concept: change
+         characters: ["Δ"]
 
    - fixity: infix
      concepts:
        - concept: and
          characters: [⁤∧]
+       - concept: applied-to
+         characters: [⁡U+2061]
        - concept: approaches
          characters: [→]
        - concept: approximately
@@ -96,8 +102,6 @@ defaultfixity:
          characters: [∉]
        - concept: not-parallel-to
          characters: [∦]
-       - concept: of
-         characters: [⁡U+2061]
        - concept: or
          characters: [∨]
        - concept: outer-product
@@ -136,11 +140,46 @@ defaultfixity:
          characters: [∪]
        - concept: xor
          characters: [⊕]
+       - concept: list-separator
+         characters: [",", ";"]
+       - concept: range-separator
+         characters: ["-", "‐", "‑", "–", "—"]
+       - concept: ellipsis
+         characters: ["…"]
+       - concept: evaluates-to
+         characters: ["→"]
+       - concept: maps-to
+         characters: ["→"]
+       - concept: translates-to
+         characters: ["→"]
+       - concept: such-that
+         characters: [":", "|"]
+       - concept: if-and-only-if
+         characters: ["⟺"]
+       - concept: perpendicular
+         characters: ["⟂"]
+       - concept: defined-as
+         characters: ["=", "≔"]
 
    - fixity: postfix
      concepts:
        - concept: factorial
          characters: ["!"]
+       - concept: percent
+         characters: ["%"]
+
+   - fixity: nofix
+     concepts:
+       - concept: radius
+         characters: ["r"]
+       - concept: diameter
+         characters: ["d"]
+       - concept: probability
+         characters: ["P"]
+       - concept: distance
+         characters: ["d", "D"]
+       - concept: volume
+         characters: ["V"]
 
    - fixity: silent
      concepts:
@@ -763,6 +802,55 @@ concepts:
   
   ## other areas =======================================================
   
+  - title: Geometry
+    intents:
+      - concept: line-segment
+        arity: 2
+        property: prefix
+        en:
+        - "line segment $1 $2"
+        comment:
+        - "Example: (`mover`): <math><mover><mrow><mi>A</mi><mi>B</mi></mrow><mo>_</mo></mover></math>"
+
+      - concept: line
+        arity: 2
+        property: prefix
+        en:
+        - "line $1 $2"
+        comment:
+        - "Example: (`mover`): <math><mover><mrow><mi>A</mi><mi>B</mi></mrow><mo>↔</mo></mover></math>"
+
+      - concept: ray
+        arity: 2
+        property: prefix
+        en:
+        - "ray $1 $2"
+        comment:
+        - "Example: (`mover`): <math><mover><mrow><mi>A</mi><mi>B</mi></mrow><mo>→</mo></mover></math>"
+
+      - concept: arc
+        arity: 2
+        property: prefix
+        en:
+        - "arc $1 $2"
+        comment:
+        - "Example: (`mover`): <math><mover><mrow><mi>A</mi><mi>B</mi></mrow><mo>⌒</mo></mover></math>"
+
+      - concept: shape
+        arity: "*"
+        property: prefix
+        en:
+        - "shape $1 $2 $3 $4"
+
+      - concept: point-at
+        arity: "3"
+        property: ???
+        en:
+        - "point $1 with coordinates $2 and $3"
+        comment:
+        - "Example: P(1,2)"
+   
+
   - title: Fill in the blank
     intents:
       - concept: blank
@@ -776,4 +864,82 @@ concepts:
         - "`<mo intent='blank'>□</mo>`"
         - "`<mspace intent='blank' width='3em'/>`"
         - "`<menclose intent='blank' notation='box'>`<br/> `<mspace width='3em'/>`<br/> `</menclose>`"
-  
\ No newline at end of file
+   
+  - title: Separators
+    intents:
+      - concept: time-separator
+        arity: 2
+        property: infix
+        en: $1 $2
+        comment:
+        - "separates hours and minutes and is typically silent"
+        - "Example: 2:31"
+ 
+   
+  - title: Generic Concepts
+    intents:
+      - concept: fenced-group
+        arity: 1
+        property: function
+        en: "fenced-group of $1"
+        comment:
+        - "this includes parens, brackets, and braces"
+      
+      - concept: ordered-pair
+        arity: 2
+        property: function
+        en: "the pair $1 and $2"
+      
+      - concept: highlight
+        arity: 1
+        property: postfix
+        en: "$1 highlighted"
+        comment:
+        - "this typically would be used inside of a larger expression and not on its own"
+        - "this might be used with `<menclose notation='box'>` or similar. It might also be used with color changes, although may be done with CSS"
+   
+      - concept: least-common-denominator
+        arity: "*"
+        property: function
+        en: "least common denominator of $*"
+   
+      - concept: rate
+        arity: 2
+        property: infix
+        en: "$1 per $2"
+        comment:
+        - "Typically used with units"
+        - "Used with `mfrac` or `/`"
+   
+      - concept: translation
+        arity: 2
+        property: function
+        en: "translation by $1 comma $2"
+        comment:
+        - "Example: <math><msub><mi>T</mi><mrow><mo>(</mo><mn>1</mn><mo>,</mo><mn>3</mn><mo>)</mo></mrow></msub></math>"
+   
+  - title: Grouping
+    intents:
+      - concept: fenced-group
+        arity: 1
+        property: function
+        en: "fenced-group of $1"
+        comment:
+        - "this includes parens, brackets, and braces"
+ 
+      - concept: annotation
+        arity: 2
+        property: function
+        en: "H 2 0, which is water"
+        comment:
+        - "used with `mover` or `munder`"
+        - "Example: <math><munder><munder><mrow><msub><mi mathvariant='normal'>H</mi><mn>2</mn></msub><mi mathvariant='normal'>O</mi></mrow><mo>&#x23DF;</mo></munder><mtext>water</mtext></munder></math>"
+ 
+ 
+      - concept: braced-group
+        arity: 1
+        property: function
+        en: "grouped $1 end-grouped"
+        comment:
+        - "used with `mover` or `munder`"
+        - "Example: <math><munder><mrow><mfrac><mn>1</mn><mn>3</mn></mfrac><mo>-</mo><mfrac><mn>1</mn><mn>6</mn></mfrac></mrow><mo>&#x23DF;</mo></munder></math>"
\ No newline at end of file