!!!alphanumeric random generator!!!
!!!Useful to generate an id for JSXGraph for example!!!

!set gl_alphaNum=0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z
!set gl_nbitem=!itemcnt $gl_alphaNum
!set gl_rd=$empty
!for gl_ii=1 to 6
  !set gl_temp=!randint 1,$gl_nbitem
  !set gl_rd=!append word $(gl_alphaNum[$gl_temp]) to $gl_rd
!next gl_ii
!set gl_rd=!nospace $gl_rd
