zonecfg.1m has some formatting problems with spacing and boldness.
Where possible (i.e. not in an .nf segment), I used the simpler man(5) syntax for bold, italic, alternating bold/italic, etc.

Following is a diff of `/usr/bin/groff -Thtml -mandoc -c` for the former and current content of zonecfg.1m:


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*** 75,78 ****
  
! <p style="margin-left:14%; margin-top: 1em">zonecfg
! <b>-z</b> <i>zonename subcommand</i></p>
  
--- 75,78 ----
  
! <p style="margin-left:14%; margin-top: 1em"><b>zonecfg
! -z</b> <i>zonename subcommand</i></p>
  
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*** 582,585 ****
  interface with the specified address. To allow multiple
! addresses (for example, an IPv4 and IPv6 address), use add
! net multiple times.</p>
  
--- 582,585 ----
  interface with the specified address. To allow multiple
! addresses (for example, an IPv4 and IPv6 address), use
! <b>add net</b> multiple times.</p>
  
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*** 810,816 ****
  mounted within the zone; for example &quot;ufs,pcfs&quot;.
! By default, only hsfs(7fs) and network filesystems can be
! mounted. If the first entry in the list is &quot;-&quot;
! then that disables all of the default filesystems. If any
! filesystems are listed after &quot;-&quot; then only those
! filesystems can be mounted.</p>
  
--- 810,817 ----
  mounted within the zone; for example &quot;ufs,pcfs&quot;.
! By default, only <b>hsfs</b>(7fs) and network filesystems
! can be mounted. If the first entry in the list is
! &quot;-&quot; then that disables all of the default
! filesystems. If any filesystems are listed after
! &quot;-&quot; then only those filesystems can be
! mounted.</p>
  
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*** 1125,1128 ****
  <p style="margin-left:11%; margin-top: 1em"><b>create [-F]
! [ -a</b> <i>path</i> |<b>-b | -t</b>
! <i>template</i><b>]</b></p>
  
--- 1126,1129 ----
  <p style="margin-left:11%; margin-top: 1em"><b>create [-F]
! [ -a</b> <i>path</i> <b>| -b | -t</b> <i>template</i>
! <b>]</b></p>
  
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*** 1210,1213 ****
  <p style="margin-left:11%; margin-top: 1em"><b>remove</b>
! <i>resource-type</i><b>{</b><i>property-name</i><b>=</b><i>property
! -value</i><b>}</b>(global scope)</p>
  
--- 1211,1215 ----
  <p style="margin-left:11%; margin-top: 1em"><b>remove</b>
! <i>resource-type</i>
! <b>[</b><i>property-name</i><b>=</b><i>property-value</i><b>]</b>
! (global scope)</p>
  
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*** 1234,1236 ****
  The <b>{}</b> syntax means 1 or more of whatever is inside
! the curly braces. You must specify enough <i>property -name
  property-value</i> pairs for the resource to be uniquely
--- 1236,1238 ----
  The <b>{}</b> syntax means 1 or more of whatever is inside
! the curly braces. You must specify enough <i>property-name
  property-value</i> pairs for the resource to be uniquely
***************
*** 1239,1241 ****
  <p style="margin-left:11%; margin-top: 1em"><b>set</b>
! <i>property-name</i><b>=</b><i>property</i><b>-</b><i>value</i></p>
  
--- 1241,1243 ----
  <p style="margin-left:11%; margin-top: 1em"><b>set</b>
! <i>property-name</i><b>=</b><i>property-value</i></p>
  
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