commands:
 l loadLineData, paste data array to redraw chart with std dev
 c askforCode, A stk start with sh of sz, eg sh000001
 C open Random Charts.html
 f jpforward
 b jpback
 r jprandom
 L askList, enter a CodeList
 i chgIntv
 w askWidth
5 lines: data, WAve5, WAve10, sd+, sd-