The new builds have a script PeriodConverter
There's a nuance of opening a file. You must specify the FILE_SHARE_READ | FILE_SHARE_WRITE
can be done to make Range
theirs
ExtHandle=FileOpenHistory(c_symbol+(string)i_period+".hst",FILE_BIN|FILE_WRITE|FILE_SHARE_WRITE|FILE_SHARE_READ|FILE_ANSI)...