Rule for MapSection

<MapKeyword>[:]\n
(<Map> \n)*
[<End>]


Rule for MapKeyword

(MAPS[_SECTION] | MAP_SECTION | Maps)

Rule for Map

<Expression> ((⎵\t)(⎵\t)* <Expression>)^{n-1}

Note that there must be exactly n expression separated by horizontal whitespace, where n is the number of columns.

Rule for Expression

[+|-]<Term>((+|-)<Term>)*

Note that within a term there is no whitespace.

Rule for Term

(<Integer> | <Integer><Name> | <Name>)

Note that each name must match one of the names defined in the NameSection. Note that in a term, each name may occur at most once.

Rule for Integer

(1-9)[(0-9)]*


Rule for Name

(a-z|A-Z)(a-z|A-Z|0-9|_|^)*

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Examples

Names:
X Y Z
Maps:
Y X Z
X-Y Z Y
+2X-3Z-Y 1 -Z

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May be used in

• OuterDescriptionFile
• InnerDescriptionFile

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Legend

[X]: X is optional.
(X|Y|Z): One of X, Y or Z is present.
(A-E): Any ASCII symbol between symbol A and E.
X*: X may occur any number of times (including zero).