K_K7 (reference) in projects: vim-8.2.3635

415 #define K_K7		TERMCAP2KEY('K', 'J')	// keypad 7  macro

1003     {K_K7,		(char_u *)"k7"},

1434 	case K_K7:		key = VTERM_KEY_KP_7; break;  in term_convert_key()

/vim-8.2.3635/src/
H A D	keymap.h	`415 #define K_K7 TERMCAP2KEY('K', 'J') // keypad 7 macro`
H A D	term.c	`680 {K_K7, "\316\366"}, 783 {K_K7, IF_EB("\033Ow", ESC_STR "Ow")}, // keypad 7 978 {K_K7, IF_EB("\033Ow", ESC_STR "Ow")}, // keypad 7 1312 {K_K7, "[K7]"},`
H A D	misc2.c	`1003 {K_K7, (char_u *)"k7"},`
H A D	getchar.c	`1797 case K_K7: c = '7'; break; in vgetc()`
H A D	terminal.c	`1434 case K_K7: key = VTERM_KEY_KP_7; break; in term_convert_key()`