22.8 Subword

Subword( w, from, to )

Subword returns the subword of the word w that begins at position from and ends at position to. from and to must be positive integers. Indexing is done with origin 1.

    gap> a := AbstractGenerator("a");;
    gap> b := AbstractGenerator("b");;
    gap> w := (a^2*b)^5*b^-1;
    a^2*b*a^2*b*a^2*b*a^2*b*a^2
    gap> Subword( w, 5, 8 );
    a*b*a^2 

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