Uses the VMS help facility to access a help file with useful information about most aspects of SPECX.
Examples:
>> help<CR>
Information available:
1D-plotting 2D-plotting Baselines Calibration
Command_language Control_functions Data_export
Data_processing Filtering FITS_(to_read_and_write)
Fourier_analysis GSD_files Information Initialization
Line_parameters Listing_and_display Map_making Multi-quadrant_data
NEWS Scan_arithmetic SPECX_files Stack_operations
User_routines X-axis_scaling
Topic? <CR>