URLEncode changes each non-alphanumeric character in the string s into a percent (%) followed by a two-digit hexadecimal representation of the character. Spaces are converted into plus (+).

$\mathrm{HTTP}:-\mathrm{URLEncode}\left(''Hello\; World!''\right)$

$''Hello+World\%21''$

RFC 3986: Uniform Resource Identifier (URI), W3C.

The HTTP[URLEncode] command was introduced in Maple 15.

For more information on Maple 15 changes, see Updates in Maple 15.