via Lua?
In interface.h I see the menus are
define SC_WALL 0
define SC_ELEC 1
define SC_POWERED 2
define SC_EXPLOSIVE 3
define SC_GAS 4
define SC_LIQUID 5
define SC_POWDERS 6
define SC_SOLIDS 7
define SC_NUCLEAR 8
define SC_SPECIAL 9
define SC_LIFE 10
define SC_TOOL 11
define SC_CRACKER 13
define SC_CRACKER2 14
define SC_TOTAL 12
The interesting thing is there appear to be 3 invisible menus (cracker, cracker2, and total) which have been given the following values correspondingly (13, 14, 12). How can I make the menus visible.

I can transfer an element to the menu like tpt.el.metl.menusection=13 (to put it in the "cracker" menu), but then how do I make the menu visible? Please help. Thanks in advance.

jacksonmj:

Not possible without modifying the source code. SC_TOTAL is the total number of menus, only menus with a value less than this can be made visible.

Unless the source code is changed that is. But how do I use Lua to enable or disable "allowed" menus (menus with an index of less than 12)?