namespace po = boost::program_options does parse_config_file function support an end-of-line continuation using the backslash character '\' in INI file. One should be able to specify libraries as follows: ink_library = tc300c10v10v_hs_levelshifter_worst.db_Tj125_pg \ tc300c10v12v_hs_levelshifter_worst.db_Tj125_pg \ tc300c10v_hs_worst.db_Tj125_pg:tc300c10v_lp_worst.db_Tj125_pg Similarly, always_on_signals as: always_on_signals = tb.u_top.uSD_BLK.tmp31,\ tb.u_top.uSD_BLK.tmp32, \ tb.u_top.uSD_BLK.out3 Besides readability, we may run into issues due to number of characters per line allowed without support for backslash. Any help will be appreaciated. Regards, -mukti __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com