I am not sure if this is what you are looking for, but the MAX_STRING_ caps are in structs.h
They look like this:
Code:
#define MAX_STRING_LENGTH 49152 /**< Max length of string, as defined */
#define MAX_INPUT_LENGTH 512 /**< Max length per *line* of input */
#define MAX_RAW_INPUT_LENGTH (12 * 1024) /**< Max size of *raw* input */
#define MAX_MESSAGES 120 /**< Max Different attack message types */
#define MAX_NAME_LENGTH 20 /**< Max PC/NPC name length */
#define MAX_PWD_LENGTH 30 /**< Max PC password length */
#define MAX_TITLE_LENGTH 80 /**< Max PC title length */
#define HOST_LENGTH 40 /**< Max hostname resolution length */
#define PLR_DESC_LENGTH 4096 /**< Max length for PC description */
#define MAX_SKILLS 600 /**< Max number of skills/spells */
#define MAX_ABILITIES 200 /**< Max number of abilities */
#define MAX_AFFECT 32 /**< Max number of player affections */
#define MAX_OBJ_AFFECT 6 /**< Max object affects */
#define MAX_NOTE_LENGTH 4000 /**< Max length of text on a note obj */
#define MAX_LAST_ENTRIES 6000 /**< Max log entries?? */
#define MAX_HELP_KEYWORDS 256 /**< Max length of help keyword string */
#define MAX_HELP_ENTRY MAX_STRING_LENGTH /**< Max size of help entry */
#define MAX_COMPLETED_QUESTS 1024 /**< Maximum number of completed quests allowed */
There is also:
Code:
/** Define the largest set of commands for a trigger.
* 16k should be plenty and then some. */
#define MAX_CMD_LENGTH 16384
which is also in structs.h
I am not sure if any of those are what you need though
