Help: type tests iscon, isstr, isnum, isfloat, ispn, isarray (4.2.34)

[ddehilster]

Documents VisualText/nlp-engine#790 (#447):

• A page for each builtin: purpose, syntax, returns, remarks and an example. The remarks cover the edge cases:
  • a digit string or "" counts as a string;
  • an unset variable reads as 0, so it counts as an integer.
• Table of Special Functions: six new rows.
• Help contents: six new index entries under Special Functions.

Merge with or after the engine PR.

🤖 Generated with Claude Code