pdldoc [-a] [-h] [-s] [-u] <text>

Think of it as the PDL equivalent of "perldoc -f".

-h help

print documentation about a PDL function or module or show a PDL manual. This is the default option.

-a apropos

Regex search PDL documentation database.

-s sig

prints signature of PDL function.

-u usage

Prints usage information for a PDL function.