ns_set_mask
NS (ns.inc)
Description
ns_set_mask - Sets or removes the mask from the entity's iuser4 field.
Syntax
ns_set_mask ( index, mask, value )
Type
Native
Notes
Set "value" to 1 to turn the mask on, 0 to turn it off.

Refer to the MASK_* constants in ns_const.inc for the mask parameter.