Despite what the online help says, the parser is NOT ignoring whitespace.

Proof: When I type "x86 && vc6 && winsdk" the GUI says, there is no slave fulfilling this expression. But when I replace it with "x86&&vc6&&winsdk", then the message goes away.

Proof: When typing "x86->x64" the GUI says the expression is wrong. When I type "x86 -> x64" the message goes away.