Sub-item usage

• sgs_GetIndex - retrieve a sub-item
• sgs_SetIndex - set a sub-item
• sgs_PushIndex - retrieve and push a sub-item
• sgs_GetGlobal - retrieve a global variable
• sgs_SetGlobal - set a global variable
• sgs_PushGlobalByName - retrieve and push the global variable, specified by a string
• sgs_GetGlobalByName - retrieve the global variable, specified by a string
• sgs_SetGlobalByName - set a global variable, specified by a string
• sgs_PushProperty - retrieve and push the string property of a variable
• sgs_SetProperty - set a string property of a variable
• sgs_PushNumIndex - retrieve and push the integer index of a variable
• sgs_SetNumIndex - set an integer index of a variable
• sgs_Registry - retrieve a table from registry
• sgs_GetEnv - retrieve the global environment table
• sgs_SetEnv - set the variable as the global environment table, if possible
• sgs_PushEnv - push the global environment table
• sgs_PushPath - retrieve and push a variable from a path of sub-items
• sgs_StorePath - store and pop the topmost stack item into a path of sub-items