xaiger: update help text

diff --git a/backends/aiger/xaiger.cc b/backends/aiger/xaiger.cc
index 1006d56c6a84aa39b22fb1dac03d7429ff2a5f8d..b8d65de4e0eedb8b327a6634a311722b0aa23622 100644 (file)
--- a/backends/aiger/xaiger.cc
+++ b/backends/aiger/xaiger.cc
@@ -762,10 +762,10 @@ struct XAigerBackend : public Backend {
                log("    write_xaiger [options] [filename]\n");
                log("\n");
                log("Write the top module (according to the (* top *) attribute or if only one module\n");
-               log("is currently selected) to an XAIGER file. Any non $_NOT_, $_AND_, $_DFF_N_,\n");
-               log(" $_DFF_P_, or non (* abc9_box_id *) cells will be converted into psuedo-inputs and\n");
-               log("pseudo-outputs. Whitebox contents will be taken from the '<module-name>$holes'\n");
-               log("module, if it exists.\n");
+               log("is currently selected) to an XAIGER file. Any non $_NOT_, $_AND_, (optionally\n");
+               log("$_DFF_N_, $_DFF_P_), or non (* abc9_box *) cells will be converted into psuedo-\n");
+               log("inputs and pseudo-outputs. Whitebox contents will be taken from the\n");
+               log("'<module-name>$holes' module, if it exists.\n");
                log("\n");
                log("    -ascii\n");
                log("        write ASCII version of AIGER format\n");