Free Hero Mesh

16 (\q) = Quiz button
30 (\d) = Data
31 (\x) = Next byte is a character to display as graphic

Codes 32-255 are displayed as is, but characters 1-31 cannot be displayed
as a graphic unless a \x escape is present.


=== Solution format ===

The .SOL lumps have the following format:

* Level version number (16-bits small-endian): If this does not match the
level version number in the .LVL lump, then the solution is considered to
be invalid.

* Flags (8-bits): Specifies which other fields are present.

* Comment (null-terminated; only present if flag bit0 set): Normally
contains a user name, but may be any arbitrary text.

* Timestamp (64-bits small-endian; only present if flag bit1 set): The
UNIX timestamp when the solution was recorded.

* Move list: One byte per turn, being the key codes. (Use of numbers 0-7
here is reserved for future use; they are not valid key codes.)

(Free Hero Mesh currently ignores the comment and time stamp, although
this might change in a future version of Free Hero Mesh.)