GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
1 2 [1XA [33X[0;0YAn Appendix[133X[101X 3 4 [33X[0;0Y[→ [14XB.11[114X][133X 5 6 [33X[0;0YThis is an appendix.[133X 7 8 9