What format shall we use?

[hornig]

gcp-osm/my_gcp_list.txt

Lines 1 to 3 in 46377aa

	5;50.0;10.0;0.0*
	23;51.1;11.1;111.1*
	42;52.2;12.2;222.2*

current format line by line
ID = any ascii
latitude = degrees in float
longitude = degrees in float
altitude = meters above ground

separator between is semicolon ;
ending the line with asterisk *

shall we use it?