By default, advent issues "> " as a command prompt. This feature
became common in many variants after the original 350-point version,
-but was never backported into Crowther & Wood's main line before now.
+but was never backported into Crowther & Woods's main line before now.
The "-o" (oldstyle) version reverts the behavior.
A "seed" command has been added. This is not intended for human use