Adding variables and commands

Variables

1.

Define the name of the new variable in extend.h:
For example #define REFINETOL_VARNAME "refinetol"

2.

Define its default value:
#define DEFAULT_REFINETOL 0.5

3.

Declare it as an extern variable:
extern double RefineTol;

4.

``Create'' it with CreatexxxVariable in extend.c:InitExtension, where (xxx) is the desired type. There are macros for several types defined in misc/shell.h.

Commands

1.

Define the name of the new command in extend.h:
For example #define TEST_CMDNAME "test".

2.

Implement its function in extend.c:
BOOL TestCommand (int argc, char **argv);

3.

``Create'' it with
CreateCommand(TEST_CMDNAME,TestCommand,NULL);