IS_EM_GATE_GRAY(e) ? EM_GATE_GRAY_NR(e) : \
IS_EMC_GATE_GRAY(e) ? EMC_GATE_GRAY_NR(e) : 0)
+#define IS_ACID_POOL_OR_ACID(e) (IS_ACID_POOL(e) || (e) == EL_ACID)
+
#define GFX_ELEMENT(e) (element_info[e].use_gfx_element ? \
element_info[e].gfx_element : e)