Free Hero Mesh

"SOLVABLE" INT); *
  This table contains a list of the levels in the current puzzle set. The
  SOLVED column is 1 if the current user has solved the level or 0
  otherwise; the SOLVABLE column is 1 if a solution is stored for this
  level or 0 otherwise (it doesn't validate the solution; to do that, use
  the -a switch instead). Although you can write to this table after it
  has been read once (this table uses lazy loading), you should not do so,
  since the changes will not be saved. There may be additional columns in
  this table in some puzzle sets (defined in the (LevelTable) block in the
  class definition file); if so, these extra columns come after the ones
  listed above, and their names will always start with a underscore.

CREATE TABLE "MESSAGES"("ID" INTEGER PRIMARY KEY, "NAME" TEXT, "TRACE"
INT); *
  The list of messages in the current puzzle set; mostly read-only. Only
  TRACE is writable; if true, this message will be traced.

CREATE TABLE "OBJECTS"("ID" INTEGER PRIMARY KEY, "CLASS" INT, "MISC1" INT,