$contents

$contents (list of names of content types)

• Specifies the contents to use for contents-mask tests during non-hitbox traces. This feature was specifically added to allow us to make things like fences out of props instead of brush models.
• The current contents types you can use are:

   * "grate" Makes it be a grate (not solid to bullets, solid to everything else)
   * "monster" Makes it be marked as an NPC
   * "notsolid" Makes it be not solid to anything
   * "solid" Makes it be solid (usually useful only for the $jointcontents command to make a solid child of a non-solid parent)
   * "ladder" Make it be a ladder 

• For example,

$contents "monster" "grate"