Graphic layout data is stored in the form of encoded instructions. Generally an instruction is simply to display a graphic of given index with a given attribute and then to advance the position of the drawing "cursor". If the first byte (normally the graphic index) is 236 or greater, however, then we are dealing with a special instruction; the values 236 and above can be considered to be opcodes. These opcodes correspond to calls/jumps to routines at addresses stored in this table. The opcodes all take different combinations of parameters.

Opcode	No. of parameters	Meaning
236	n + 1	Modify the following instruction to have a graphic index selected at random from the following list of n values
237	1	Set the sound with index given in the parameter as pending
238	1	Store graphic layout data address to mark start of loop A and set repeat counter A to value in parameter
239	0	Decrement repeat counter A and jump back to stored graphic layout data address for start of loop A
240	1	Store graphic layout data address to mark start of loop B and set repeat counter B to value in parameter
241	0	Decrement repeat counter B and jump back to stored graphic layout data address for start of loop B
242	1	Set the current attribute to value in parameter
243	n + 2	Increment index, m, of address to jump to, resetting to zero if above maximum, then jump to m-th graphic layout data address in following list of n addresses
244	1	Set the current graphic set index to value in parameter
245	n + 3	Decrement timer and if zero, reset to maximum and modify the following instruction to have a graphic index selected at random from the following list of n values
246	n + 3	Decrement timer and if zero, reset to maximum and modify the following instruction to have an attribute selected at random from the following list of n values
247	n + 1	Jump to one of the following n graphic layout data addresses chosen at random
248	1	Jump to the given graphic layout data address
249	3n + 2	Jump to time-weighted, randomly selected graphic layout data address in list
250	2	Adjust current x- and y-coordinates for drawing without storing
251	1	Process graphic layout data at given address and return to current position when complete
252	1	If Berk is holding nothing then jump to given graphic layout data address
253	4	Jump to graphic layout data address selected from list, based upon width of entity currently held by Berk
254	2	Adjust x- and y-coordinates for drawing and store at 34281
255	0	Move cursor to stored coordinates and return from drawing