+enum roffscale {
+ SCALE_CM, /* centimeters (c) */
+ SCALE_IN, /* inches (i) */
+ SCALE_PC, /* pica (P) */
+ SCALE_PT, /* points (p) */
+ SCALE_EM, /* ems (m) */
+ SCALE_MM, /* mini-ems (M) */
+ SCALE_EN, /* ens (n) */
+ SCALE_BU, /* default horizontal (u) */
+ SCALE_VS, /* default vertical (v) */
+ SCALE_FS, /* syn. for u (f) */
+ SCALE_MAX
+};
+
+struct roffcol {
+ size_t width; /* width of cell */
+ size_t decimal; /* decimal position in cell */
+};
+
+struct roffsu {
+ enum roffscale unit;
+ double scale;
+};
+
+typedef size_t (*tbl_strlen)(const char *, void *);
+typedef size_t (*tbl_len)(size_t, void *);
+
+struct rofftbl {
+ tbl_strlen slen; /* calculate string length */
+ tbl_len len; /* produce width of empty space */
+ struct roffcol *cols; /* master column specifiers */
+ void *arg; /* passed to slen and len */
+};
+