Free Hero Mesh

You can specify the order of execution of objects by class by a global
(Order) block. Inside of this block is a list of sub-lists; each sub-list
is delimited by parentheses.

Each sub-list starts with a flag name, which may be a user flag, or Input,
or Player, or Control. This matches only classes that have that flag
(changing that flag at run time has no effect on order of execution). A
sub-list can also start with a class name, in which case only objects of
that class match; if it is an abstract class then any classes that inherit
from it (directly or indirectly) also match.

The remaining elements are optional; if they are present, they are used to
break ties. First, the second item breaks ties if there is one, and then
if there is still a tie then the third item breaks ties, etc. These extra
elements can be one of the following, with or without a comma: Misc1,
Misc2, Misc3, Misc4, Misc5, Misc6, Misc7, Temperature, Density, Xloc, Yloc,
Image. If there is no comma, they are lowest to highest, but a comma
reverses the order to be highest to lowest instead. These values are
treated as signed, and the values after INIT or CREATE message returns is
used. If any of the values is not a number, then it is an error.

Custom criteria are also possible. In this case, any of the items in the
list (other than the first one) can be a user-defined message name (but not
a built-in message). In this case, the message is sent to other objects that
match the first element of the current list to compare them. From is the
object that needs to be inserted into the list (which has just been created
or initialized), and Arg1 and Arg2 are the coordinates of that object. The
return value is negative or positive for the result of the comparison, or
zero if the result is a tie. State-changing effects are not allowed during
the processing of this message.

The order of execution is then first all objects not listed in the (Order)
block, and then for each sub-list in the (Order) block, the objects that
meet that criteria, in that order. (If it meets multiple criteria, only
the first one that meets that criteria is used.)

Objects not listed in the (Order) block are executed in the reverse order