# Working with Dynamic Data

- [Connections](/templates/working-with-dynamic-data/connections.md)
- [Airtable Connection](/templates/working-with-dynamic-data/connections/airtable-connection.md)
- [HubSpot (Coming Soon)](/templates/working-with-dynamic-data/connections/hubspot-coming-soon.md)
- [Fields Editor](/templates/working-with-dynamic-data/fields-editor.md)
- [Field Tokens](/templates/working-with-dynamic-data/field-tokens.md)
- [Token Formatting](/templates/working-with-dynamic-data/field-tokens/token-formatting.md): Format variables the way you want them to look
- [Number](/templates/working-with-dynamic-data/field-tokens/token-formatting/number.md)
- [Date & Time](/templates/working-with-dynamic-data/field-tokens/token-formatting/date-and-time.md)
- [Text](/templates/working-with-dynamic-data/field-tokens/token-formatting/text.md)
- [Functions & Operators](/templates/working-with-dynamic-data/functions-and-operators.md)
- [Syntax](/templates/working-with-dynamic-data/functions-and-operators/syntax.md)
- [$calc](/templates/working-with-dynamic-data/functions-and-operators/calc.md): The $calc function is a powerful expression evaluator that enables complex calculations, string manipulations, array operations, and provides a secure sandbox environment within your templates.
- [$var](/templates/working-with-dynamic-data/functions-and-operators/usdvar.md): Creates a custom variable in your template which you can access from other parts of your template
- [Math](/templates/working-with-dynamic-data/functions-and-operators/math.md)
- [$add](/templates/working-with-dynamic-data/functions-and-operators/math/usdadd.md): Add two numbers together
- [$subtract](/templates/working-with-dynamic-data/functions-and-operators/math/usdsubtract.md): Subtracts the second number from the first number.
- [$multiply](/templates/working-with-dynamic-data/functions-and-operators/math/usdmultiply.md): Multiplies two numbers together
- [$divide](/templates/working-with-dynamic-data/functions-and-operators/math/usddivide.md): Divides the first number by the second number.
- [$sum](/templates/working-with-dynamic-data/functions-and-operators/math/usdsum.md): Computes the sum of the values.
- [$min](/templates/working-with-dynamic-data/functions-and-operators/math/usdmin.md): Computes the minimum number in an array.
- [$max](/templates/working-with-dynamic-data/functions-and-operators/math/usdmax.md): Computes the maximum number in an array.
- [$mean](/templates/working-with-dynamic-data/functions-and-operators/math/usdmean.md): Computes the average of all values in an array.
- [$round](/templates/working-with-dynamic-data/functions-and-operators/math/usdround.md): Computes number rounded to precision.
- [$floor](/templates/working-with-dynamic-data/functions-and-operators/math/usdfloor.md): Computes number rounded down to precision.
- [$ceil](/templates/working-with-dynamic-data/functions-and-operators/math/usdceil.md): Computes number rounded up to precision.
- [List/Arrays](/templates/working-with-dynamic-data/functions-and-operators/list-arrays.md)
- [#each](/templates/working-with-dynamic-data/functions-and-operators/list-arrays/each.md): Loops over an array (list) of items.
- [$filter](/templates/working-with-dynamic-data/functions-and-operators/list-arrays/usdfilter.md): Filters an array/list of items.
- [$group](/templates/working-with-dynamic-data/functions-and-operators/list-arrays/usdgroup.md): Group items together and create a loop of those items
- [$join](/templates/working-with-dynamic-data/functions-and-operators/list-arrays/usdjoin.md): Concatenates an array (list) of items into a string.
- [Helpers](/templates/working-with-dynamic-data/functions-and-operators/helpers.md)
- [$extname](/templates/working-with-dynamic-data/functions-and-operators/helpers/usdextname.md): Returns the extension name of a filename.
- [$inspect](/templates/working-with-dynamic-data/functions-and-operators/helpers/usdinspect.md): Displays the raw merge data used to create the document. Useful for debugging your template when merging documents.
- [Content](/templates/working-with-dynamic-data/functions-and-operators/content.md)
- [$link](/templates/working-with-dynamic-data/functions-and-operators/content/usdlink.md): Creates a link to a given URL
- [$md](/templates/working-with-dynamic-data/functions-and-operators/content/usdmd.md): Renders markdown content
- [Legacy Formatting](/templates/working-with-dynamic-data/legacy-formatting.md): Format variables the way you want them to look
- [Number](/templates/working-with-dynamic-data/legacy-formatting/number.md)
- [Date & Time](/templates/working-with-dynamic-data/legacy-formatting/date-and-time.md)