Number_Lines is a function

Also help file was changed acording with this change.
6 jobs for Number_Lines in 7 minutes and 16 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Make
passed make:linux_gfortran #20621
sci ubuntu

00:01:18

passed make:linux_ifort #20622
sci ubuntu

00:02:19

passed make:macos_gfortran #20623
sci osx-10.13

00:02:04

passed make:macos_ifort #20624
sci osx-10.13

00:04:24

passed make:windows_gfortran #20625
sci windows-10

00:03:17

passed make:windows_ifort #20626
sci windows-10

00:03:58