extract_blink

	EXTRACT_BLINK(color)

	This macro returns the blink code from a color value suitable for
	passing to 'window_'  routines and the 'wn_' routines
	wn_display_value(_c), wn_colored_text_c,
	wn_external_display_value_c, and wn_external_colored_text_c.

	color		compound color value

	This macro returns values as follows:

	extracted blink code

	This macro is found in: macro_h

	Related macros:

	tv_colors, TV_COLORS_WBLINK, EXTRACT_FORECOLOR, EXTRACT_BACKCOLOR,
	INVERT_COLORS, BLINK_COLOR