= File select

        {SELect | ST | SB | SH | SN | SC(=SL) | SCN(=Si) | SK | SKN(=SJ)}
               [file-name | -lineno]   [options...]

            -Effective on dir-list panel only.
             Depending on directory open command,EDIt or BROwse cmd is
             issued with concatenated filename of operand and directory
             name which is displayed on header line.
             if dir has only one member file-name parameter may be omitted.
            -Select command verb for the file to be opened.
             See EDIt command for also operands.
            -"-lineno"
             Lineno of dir-list as alternative of file-name.
             Selects 1st member if both file-name and lineno is missing.

     = Line select

        SELect [all] [col1 col2] [.label1 .label2]

            -label1/2:line range col1/2:column range
             numeric specification for both label 1 and 2 are accepted as lineno.
             Block mode if col1/2 specified, Range mode if col1/2 is not specified.
             "Select All" if both label and column is not specified.
               e.g.) sel; sel .a .b; sel 1 20; sel 10 20 .1 .4;
            -Select block/range to Cut/Copy/Paste on Edit panel.
             You can paste just after selection of block.
             For range mode, selected range itself is target of Paste Range mode.
             So you need to save the region(Alt+F9) before paste(Alt+F8/Alt+Ins).
            -Abridged format command "S" is not available
             "S" means "SAVe" on Browse/Edit panel.