add how to enable code folding
add how to enable code folding

astropeak/aspk-code-base,astropeak/aspk-code-base,astropeak/aspk-code-base,astropeak/aspk-code-base,astropeak/aspk-code-base,astropeak/aspk-code-base,astropeak/aspk-code-base,astropeak/aspk-code-base,astropeak/aspk-code-base