Provided by: libx11-doc_1.6.2-1ubuntu2.1_all 

NAME
XFree - free client data
SYNTAX
int XFree(void *data);
ARGUMENTS
data Specifies the data that are to be freed.
DESCRIPTION
The XFree function is a general-purpose Xlib routine that frees the specified data. You must use it to
free any objects that were allocated by Xlib, unless an alternate function is explicitly specified for
the object. A NULL pointer cannot be passed to this function.
SEE ALSO
Xlib - C Language X Interface
X Version 11 libX11 1.6.2 XFree(3)