It's the turn of one of the little girls (0xB7-0xBD), or one of the first 8 little boys (0xBE-0xC5). But if the part of the play area currently on-screen is somewhere this character never ventures into, we skip ahead to the next suitable candidate. Specifically, the following characters are skipped depending on the value of X (the leftmost column of the skool on-screen):

X	Skip
X<=72	girls 1-7 (0xB7-0xBD)
80<=X<=112	girls 4-7 and boys 1-3 (0xBB-0xC0)
X>=120	boys 1-8 (0xBE-0xC5)

We are deep into the boys' skool, where no girls ever set foot.

The leftmost column of the play area on screen is at least 80.

The leftmost column of the play area on screen is at least 120. Little boys 1-8 never set foot here.

The leftmost column of the play area on screen is between 80 and 112. Little girls 4-7 and little boys 1-3 never visit these parts.

We've now determined which character to move next. His character number is in A.

It's time to consider a change in walking speed. If the character is a boy or girl, decide whether they will walk or run for the next little while.

We're dealing with a human character. Bit 4 of byte 0x1D of the character's buffer is never set, but if it were, it would make the character run until the current command list routine has finished. Check bit 4 of byte 0x1D now.

Now to determine whether to move the character this time round. The answer will be yes if byte 0x1E (which is decremented on each pass through this routine) is even, or bit 7 of byte 0x1D is set (indicating that the character is either running or non-human).

The character shall be moved. From this point, the following steps are taken:

Step	Action
1	If there is an uninterruptible subcommand routine address in bytes 0x11 and 0x12 of the character's buffer, jump to it
2	If there is a continual subcommand routine address in bytes 0x17 and 0x18 of the character's buffer, call it (and then return to step 3)
3	If there is an interruptible subcommand routine address in bytes 0x09 and 0x0A of the character's buffer, jump to it
4	Restart the command list if bit 0 of byte 0x1D of the character's buffer is set (and carry on to step 5)
5	If there is a primary command routine address in bytes 0x03 and 0x04 of the character's buffer, jump to it
6	Remove any continual subcommand routine address from bytes 0x17 and 0x18 of the character's buffer
7	Collect the next primary command routine address from the command list, place it into bytes 0x03 and 0x04 of the character's buffer, and jump to it

The address of one of the following uninterruptible subcommand routines (or an entry point thereof) may be present in bytes 0x11 and 0x12 of the character's buffer:

Address	Description
5F08	Make HAYLEY hit ERIC
6670	Deal with a character who's been dethroned (1)
667F	Deal with a character who's been dethroned (2)
6697	Deal with a character who is looking for a seat
6D25	Make a boy sit still until assembly is finished
70B7	Make a character open or close a door
720A	Control the bike when ERIC's not sitting on the saddle
74C8	Control the descent of the water, sherry or conker
7596	Deal with a character who has been knocked over
76AC	Control the flight of a catapult pellet
77B3	Deal with BOY WANDER when he is firing
7813	Deal with ANGELFACE when he is hitting
7854	Deal with the frog when it has been knocked out of a cup
78BA	Control the frog
7966	Control a female character while she's standing on a chair or jumping (1)
7974	Make a female character stand on a chair or start jumping
7A16	Control a mouse
D224	Make a character do nothing
F3B2	Control an open desk lid
F88B	Control a stinkbomb cloud
F8F5	Make MR WACKER find a window to open after smelling a stinkbomb
F9D8	Control water fired from the pistol
FAAF	Control a watered plant

The address of one of the following continual subcommand routines (or an entry point thereof) may be present in bytes 0x17 and 0x18 of the character's buffer:

Address	Description
775B	Make BOY WANDER fire his catapult now and then
F4CC	Make ALBERT keep an eye out for ERIC during lessons
F7DF	Make ANGELFACE stalk HAYLEY
F804	Make ANGELFACE or BOY WANDER hit or fire now and then

The address of one of the following interruptible subcommand routines (or an entry point thereof) may be present in bytes 0x09 and 0x0A of the character's buffer:

Address	Description
63ED	Guide a character to an intermediate destination
6438	Guide a character up a staircase
644D	Guide a character down a staircase
680F	Make a teacher wipe a blackboard
6880	Make a character write on a blackboard
6A08	Make a character speak
7E7B	Make MISS TAKE chase ERIC (2)
F017	Make EINSTEIN speak
F09B	Make a teacher find the truant ERIC
F54A	Make MR WACKER find the truant ERIC

The address of one of the following primary command routines (or an entry point thereof) may be present in bytes 0x03 and 0x04 of the character's buffer:

Address	Description
6464	Make a character go to a location
64D7	Make a character go to a random location
66C0	Make a character find a seat
6D00	Control a boy during assembly
717C	Make a character open or close a door
7CD0	Make a character walk up and down until a certain time
7CE1	Make a character walk up and down a few times or until a certain time
7EF1	Make BOY WANDER write on a blackboard
D224	Make a character do nothing
F000	Control EINSTEIN during class
F073	Restart the command list or make a teacher tell the kids to sit down
F0B8	Restart the command list
F0BF	Make a teacher find ERIC if he's absent during dinner
F0DA	Control a teacher during assembly
F100	Make a teacher conduct a class
F250	Make MR WACKER put the kids in detention
F460	Make the next command be the start of the command list
F46C	Restart the command list unless the boys' skool door is closed
F487	Jump forward in the command list if the boys' skool door or the gate is closed
F49C	Wait till everyone has gone past the gate or the boys' skool door
F7D7	Place a continual subcommand routine address into a character's buffer
F80D	Restart the command list unless it's time for assembly

This entry point is used by the routine at 6394.

If we get here, that means there's no uninterruptible subcommand routine address in bytes 0x11 and 0x12 and no interruptible subcommand routine address in bytes 0x09 and 0x0A of the character's buffer at the moment. We take this opportunity to check whether a command list restart has been requested, by inspecting bit 0 of byte 0x1D. This bit is set in the following routines on particular occasions:

Routine	Occasion
7D3E	MISS TAKE needs to chase ERIC out of the girls' skool
F09B	A teacher must find the absent ERIC during class, dinner or assembly
F4CC	MR WACKER must find the truant ERIC
F532	MR WACKER must find and expel ERIC
F74D	Lesson has ended

In addition, a command in the command list may have requested a restart (see F073, F0B8, F46C and F80D).

There is no primary command routine address in bytes 0x03 and 0x04 of the character's buffer, which means it's time to move to the next command in the list.

This entry point is used by the routine at F7D7.