--- man-pages/man7/man.7	2020-12-22 00:20:45.000000000 +0900
+++ build/C/man7/man.7	2021-03-10 06:37:40.359116605 +0900
@@ -269,8 +269,7 @@
 .B \&.UE
 macro as the link text.
 .TP
-.B \&.UE \c
-.RI [ trailer ]
+\fB\&.UE\fP [ \fItrailer\fP ]
 Terminate the link text of the preceding
 .B \&.UR
 macro, with the optional
--- man-pages/man7/bpf-helpers.7	2020-12-22 00:20:45.000000000 +0900
+++ build/C/man7/bpf-helpers.7	2021-03-12 04:31:31.724284261 +0900
@@ -213,9 +213,7 @@
 .INDENT 3.5
 .sp
 .nf
-.ft C
 telnet\-470   [001] .N.. 419421.045894: 0x00000001: <formatted msg>
-.ft P
 .fi
 .UNINDENT
 .UNINDENT
@@ -577,7 +575,6 @@
 .INDENT 3.5
 .sp
 .nf
-.ft C
 int ret;
 struct bpf_tunnel_key key = {};
 
@@ -589,7 +586,6 @@
         return TC_ACT_SHOT;     // drop packet
 
 return TC_ACT_OK;               // accept packet
-.ft P
 .fi
 .UNINDENT
 .UNINDENT
@@ -642,12 +638,10 @@
 .INDENT 3.5
 .sp
 .nf
-.ft C
 struct bpf_tunnel_key key;
      populate key ...
 bpf_skb_set_tunnel_key(skb, &key, sizeof(key), 0);
 bpf_clone_redirect(skb, vxlan_dev_ifindex, 0);
-.ft P
 .fi
 .UNINDENT
 .UNINDENT
@@ -863,9 +857,7 @@
 .INDENT 3.5
 .sp
 .nf
-.ft C
 # sysctl kernel.perf_event_max_stack=<new value>
-.ft P
 .fi
 .UNINDENT
 .UNINDENT
@@ -1571,9 +1563,7 @@
 .INDENT 3.5
 .sp
 .nf
-.ft C
 normalized_counter = counter * t_enabled / t_running
-.ft P
 .fi
 .UNINDENT
 .UNINDENT
@@ -1940,9 +1930,7 @@
 .INDENT 3.5
 .sp
 .nf
-.ft C
 # sysctl kernel.perf_event_max_stack=<new value>
-.ft P
 .fi
 .UNINDENT
 .UNINDENT
@@ -3011,7 +2999,6 @@
 .INDENT 3.5
 .sp
 .nf
-.ft C
 SEC("kprobe/sys_open")
 void bpf_sys_open(struct pt_regs *ctx)
 {
@@ -3024,7 +3011,6 @@
         // can use res (the string length) as event
         // size, after checking its boundaries.
 }
-.ft P
 .fi
 .UNINDENT
 .UNINDENT
@@ -3596,9 +3582,7 @@
 .INDENT 3.5
 .sp
 .nf
-.ft C
 # sysctl kernel.perf_event_max_stack=<new value>
-.ft P
 .fi
 .UNINDENT
 .UNINDENT
@@ -3634,9 +3618,7 @@
 .INDENT 3.5
 .sp
 .nf
-.ft C
 char ____license[] __attribute__((section("license"), used)) = "GPL";
-.ft P
 .fi
 .UNINDENT
 .UNINDENT
--- original/man1/time.1	2021-04-08 16:17:15.000000000 +0900
+++ build/C/man1/time.1	2021-04-08 18:46:00.000000000 +0900
@@ -10,8 +10,7 @@
 .SH NAME
 time \- time a simple command or give resource usage
 .SH SYNOPSIS
-.B time \c
-.RI [ options ] " command " [ arguments... ]
+\fBtime \fP[\fIoptions\fP]\fI command \fP[\fIarguments...\fP]
 .SH DESCRIPTION
 The
 .B time
--- original/man2/mmap.2	2021-04-08 16:17:16.000000000 +0900
+++ build/C/man2/mmap.2	2021-04-08 18:50:00.000000000 +0900
@@ -289,7 +289,7 @@
 .BR MAP_FIXED_NOREPLACE
 flag will typically (upon detecting a collision with a preexisting mapping)
 fall back to a "non-\c
-.B MAP_FIXED\c
+.BR MAP_FIXED \c
 " type of behavior:
 they will return an address that is different from the requested address.
 Therefore, backward-compatible software
