Local $Str = FileRead('A.TXT')
Local $s_0 = 'EFGHIDK:'
Local $aSR = StringRegExp($str, '(?mi)^(\V+)\v+\h*' & $s_0, 3)
If Not @Error Then MsgBox(0, '', $aSR[0])
Local $Str = FileRead('A.TXT')
Local $s_0 = 'EFGHIDK:'
Local $aSR = StringRegExp($Str, '(?mi)^(\V+)\v+\h*' & $s_0, 3)
If @error Then Exit
For $v In $aSR
MsgBox(0, '', $v)
Next