v0.1.1.1: renamed all functions
v0.1.1.2: renamed header into titlebar
v0.1.1.3: renamed footer into statusbar
v0.1.1.4: renamed body into browser
v0.1.1.5: some sorting
v0.1.1.6: create __blscd_p_draw_screen_lines()
v0.1.1.7: revise __blscd_p_build_array()
v0.1.1.8: revise __blscd_p_declare_unset