| LIB "general.lib";
A_Z("c",5);
→ c,d,e,f,g
A_Z("Z",-5);
→ Z,Y,X,W,V
string sR = "ring R = (0,"+A_Z("A",6)+"),("+A_Z("a",10)+"),dp;";
sR;
→ ring R = (0,A,B,C,D,E,F),(a,b,c,d,e,f,g,h,i,j),dp;
execute(sR);
R;
→ // characteristic : 0
→ // 6 parameter : A B C D E F
→ // minpoly : 0
→ // number of vars : 10
→ // block 1 : ordering dp
→ // : names a b c d e f g h i j
→ // block 2 : ordering C
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