Index: bin/ps/keyword.c
===================================================================
--- bin/ps/keyword.c
+++ bin/ps/keyword.c
@@ -69,6 +69,8 @@
 static VAR var[] = {
 	{"%cpu", "%CPU", NULL, "percent-cpu", 0, pcpu, 0, CHAR, NULL, 0},
 	{"%mem", "%MEM", NULL, "percent-memory", 0, pmem, 0, CHAR, NULL, 0},
+	{"abi", "ABI", NULL, "application-binary-interface", LJUST, emulname, 0,
+	    CHAR, NULL, 0},
 	{"acflag", "ACFLG", NULL, "accounting-flag", 0, kvar, KOFF(ki_acflag),
 	    USHORT, "x", 0},
 	{"acflg", "", "acflag", NULL, 0, NULL, 0, CHAR, NULL, 0},
Index: bin/ps/ps.1
===================================================================
--- bin/ps/ps.1
+++ bin/ps/ps.1
@@ -531,6 +531,9 @@
 .It Cm %mem
 percentage memory usage (alias
 .Cm pmem )
+.It Cm abi
+system call interface (ABI) (alias
+.Cm emul )
 .It Cm acflag
 accounting flag (alias
 .Cm acflg )
@@ -549,8 +552,6 @@
 systems).
 .It Cm dsiz
 data size (in Kbytes)
-.It Cm emul
-system-call emulation environment (ABI)
 .It Cm etime
 elapsed running time, format
 .Do