14.09.11	freq > 2GHz fixed (overflow freq_diff)
14.09.12	new start-form EXE
14.09.17	change instr management, posix path comp.
14.10.14	error in aplying wb-correction
		#release as 7.19
14.11.20	rework antenna (IOerror)
15.07.27	new Annex3
15.08.31	old Cmodes out, test: cdf fields corr. length, move pwr input
		#release as 7.20
15.12.22	repair profile (1st, n-th)
16.05.18	repair dBuV/m in debug
16.05.24	mod. x-km filter, comp. multithread
16.06.09	calc most factors allways (no free space skip)
16.07.12	implement autom. seatemp
16.07.21	add autom. seatemp to interface
16.10.27	Delta_f more exact
17.04.25	new profile, pointX (20% faster, simpler), new 1546 values
17.04.27	combined TOPO/MORPHO/PROFILE
17.04.29	gap (0m hasl) in profiles with even # points corrected
17.05.06	"overflow" with new srtm (GB-F) error solved, 
		profile allways had one "superfluous" point solved
17.05.13	div. "overflow errors" and hcm_error 36/220 corrected
		#release as 7.21f
17.10.30	corrected C_mode read in input files for .exe
		corrected autom. sea temp for negative C_mode
		corrected V_angle_Tx_Rx calc for negative C_mode
17.11.08	cleaned some additional output
17.11.11	corrected info and output for D_sea
		#released as 7.21
18.04.20	optimized line file access (HNG)
		#released as 7.21.1
18.04.20	removed "nulls" in inputstring (at exit)
		corrected error if missing Rx fq on p2p
		corrected "calculated" Tx/Rx coords (wrong if only fix stations)
		corrected occasional "floating underrun" errors in line cache
		#released as 7.21.2
19.04.02	introduced "H" to bandwidth designation
		#released as 7.21.3
19.11.26	increased line buffer (1200->1400 records)
		#released as 7.21.4
21.05.12	effectively use input for distance over sea
		#released as 7.21.5