# Cheat Sheet A test of this stuff(svg mostly) in bookstack! Looks like it doesn't export as pdf and the preview is blank. Internal links seem not to work. But it looks ok on the page (aside from being too wide in places.
BNFProduction: publicprivateprotectedReturnType#<IDENTIFIER>FormalParametersThrowsListTreeNodeDescriptorRECOVER_TOExpansionChoice:<IDENTIFIER>:Block#ExpansionChoice;
TreeNodeDescriptor: #Nameabstractinterfacevoid(>>=<<=+-Expression)
ExpansionChoice: |1..NExpansionSequence
ExpansionSequence: LookaheadExpansionUnit!
ExpansionUnit: UNCACHE_TOKENSFailureCodeBlock#UnparsedCodeBlockAttemptBlockTryBlockAssertionExpansionWithParenthesesZeroOrOneTerminalNonTerminalInlineTreeNodeDescriptor
Failure: FAIL:ExpressionCodeBlock
AttemptBlock: ATTEMPTExpansionChoiceRECOVERExpansionWithParenthesesCodeBlock
UnparsedCodeBlock: {$<UNPARSED_CONTENT>$}
TryBlock: try{ExpansionChoice}CatchBlockFinallyBlock
Assertion: ASSERT{Expression}#~(ExpansionChoice):Expression:=>||
ExpansionWithParentheses: LexicalStateSwitchTokenActivationAssignment(ExpansionChoice)*?+!=>||
ZeroOrOne: LexicalStateSwitchTokenActivationAssignment[ExpansionChoice]!=>||
NonTerminal: Assignment<IDENTIFIER>InvocationArguments!ChildNameInfo=>||
Terminal: AssignmentRegexpStringLiteralRegexpRefEndOfFile!ChildNameInfo=>||
InlineTreeNodeDescriptor: \Assignment#Name(>>=<<=+-Expression)(Expression)
Assignment: @Name/Name/=:==?:=?=$:=$+=:+=