Run `fn` over `items` with at most `limit` concurrent calls.

Plain text of a thread message's content (tool-call parts have no text).

Horizontal position (0..1) of the progress dot WITHIN the active * milestone's bar segment, derived from how far the learner is through * that mil

* Mirror an absolute SVG path horizontally across the given width. * Supports the command subset used by preset arrow shapes: M, L, A, Z.

Mock the scene actions generation endpoint. * When no stageId is provided, it is extracted from the request body * so the mock response matche

Mock the scene content generation endpoint

Mock the SSE outline streaming endpoint

Mock the server providers endpoint (returns empty — client-side config only)

* Pre-process OMML XML: normalize Unicode Mathematical Alphanumeric chars * to BMP equivalents BEFORE passing to omml2mathml. * This avoids surrogat

* Normalize quiz answer from AI response. * AI may generate correctAnswer as string or string[], under various field names. * This normalizes to str

* Normalize quiz options from AI response. * AI may generate plain strings ["OptionA", "OptionB"] or QuizOption objects. * This normalizes to QuizOp

* Build an open-arrow (two lines, no fill) path at `tip`.

* Build an oval arrowhead at `tip`.

* Parse adjustment values from `a:avLst > a:gd` elements. * Each guide has a `name` attribute and a `fmla` attribute like "val 50000".

* Parse all attributes of a node into a Map<string, string>.

* Parse all attributes of a node into a Map<string, string>. * Used for clrMap where every attribute is a color mapping entry.

\a\vs N\al\co M(items) → \begin{array}{c} items \end{array}

Parse a boolean-ish env value. Falsey words ⇒ false; anything else ⇒ true.

* \b\lc X\rc Y(content) → \left X content \right Y * \b may also appear without \lc/\rc for simple brackets.

* Parse a single table cell (`a:tc`).

* Parse a SmartArt diagram graphicFrame by resolving the diagram drawing fallback XML. * The drawing XML contains pre-rendered shapes in a spTree tha

\f(numerator,denominator) → \frac{num}{den}

* Parse a GDI Comment record looking for embedded PDF data.

* Parse a raw XML child node from a group into a typed node.

\i(type,sub,sup,integrand) → \int_{sub}^{sup} integrand