6 calls to variable_callback() in Variable 7

variable_build_multiple in ./variable.inc

Build multiple variables

variable_build_options in ./variable.inc

Build variable with options

variable_build_variable in ./variable.inc

Build single variable

variable_format_value in ./variable.module

Format printable value

variable_get_value in ./variable.module

Get value for simple scalar variable

variable_option_list in ./variable.inc

Fetch options for variable