+chimara_glk_set_default_font_description
+chimara_glk_set_default_font_string
+chimara_glk_get_default_font_description
+chimara_glk_set_monospace_font_description
+chimara_glk_set_monospace_font_string
+chimara_glk_get_monospace_font_description
+chimara_glk_set_spacing
+chimara_glk_get_spacing