extern struct w_version { short patchlevel; /* Major number version : 0x120 stands for 1.20 */ short release; /* Minor number version (begining at 1) */ char *date; /* Date of compilation */ char *time; /* Time of compilation */ char *cc_name; /* Name of compiler used can be : "Pure C" "Gnu C" "Sozobon X" short cc_version; /* Number version of compiler used */ } WinDom;Fields patchlevel and release are new from WinDom version 1.20 ?