Improve the description for the additional commands.

Add description for the new drop command.
Correct the quotes.

info/march.t

@@ -7,7 +7,7 @@ You can control one unit or an entire army with it.
 .s1
 Land units may only move into sectors you own, sectors of countries
 you are allied with or deity-owned sectors with 1 exception.  Spies.  Spies
-may move anywhere, with a chance of getting caught.  See "info Spies" for
+may move anywhere, with a chance of getting caught.  See \*Qinfo Spies\*U for
 more information.
 .s1
 If you are moving an army and the lead unit stops, the army stops;
@@ -42,21 +42,48 @@ i  to list land units you are marching
 r  for radar
 l  for lookout
 m  to sweep landmines
+d  to drop landmines
 h  for end of movement
 .FI
 .s1
-The radar option will cause the lead unit to use it's radar, if any.
+The \*Qradar\*U command will cause the lead unit to use it's radar, if any.
 You may also give a unit number or army or group of units on the same
-line: "r 12/13/14/73"
+line: \*Qr 12/13/14/73\*U
 .s1
-The lookout option works in the same way as radar, i.e. it will cause the
+The lookout command works in the same way as radar.
-lead unit to do a lookout.
 .s1
-Note: the lookout and radar commands use BTU's, just as if you'd typed them
+The \*Qmap\*U command will give you a
-separately from the command line.
+map surrounding the current position.
+By default, it will be around the leader,  but you may also
+specify a unit number.
+.EX <32.3: g 6,2> m 3
 .s1
-You may also use the 'm' command to have engineers in the marching
+is equivalent to a \*Qlmap\*U command. like
+this:
+.EX lmap 3 ls
+The \*Qmap\*U command works in the same way,
+you get a bmap instead.
+.s1
+The \*Qleader\*U command will the change the leader.
+By default, it will select next unit in the list, but you may also
+specify a land unit.
+.s1
+The \*Qdrop\*U command will lay land mines using engineers.
+You can specify the unit number or army or groups of units
+and the number of land mines on the same line: \*Qd 12/13 10\*U.
+An omitted unit number defaults to the leader,
+for example \*Qd 10\*U lays ten land mines from the leader.
+If you omit the number of land mines as well, the leader will lay one
+mine.
+.s1
+The \*Qsweep\*U command will have the engineers in the marching
 group search for mines in the current sector.
+This costs as much mobility as entering a sector with mobility cost
+of 0.2.
+.s1
+Note: the lookout, radar, drop and sweep commands use BTU's,
+just as if you'd typed them
+separately from the command line.
 .s1
 Since the <ROUTE> can be specified in the command line,
 simple unit movements are often typed as a single line, such as:
@@ -92,7 +119,7 @@ Note that if you are marching multiple units, you may only specify a
 destination sector on the command line if all the units start in the
 same sector.
 .s1
-See "info Mobility" for the mobility cost to march land units.
+See \*Qinfo Mobility\*U for the mobility cost to march land units.
 .s1
 Moving a unit through a sector that has been mined
 introduces a chance of mines/(mines + 50) that you will be damaged.

info/navigate.t

@@ -42,19 +42,50 @@ r  for radar
 l  to look at land and nearby ships
 s  for sonar
 m  to sweep mines
+d  to drop mines
 h  for end of movement
 .FI
 .s1
-While navigating you may also use radar, sonar, or lookout
-(by entering r, s, or l). By default, it will radar, sonar, or 
-lookout from the flagship. You may also
-give a ship number or fleet or group of ships on the same
-line: "r 12/13/14/73"
 .s1
-You may also use minesweepers in the currently navigating group to
+The \*Qradar\*U command will cause the flagship to use it's radar, if any.
-sweep mines by entering a 'm'.
+You may also give a ship number or fleet or group of ships on the same
+line: \*Qr 12/13/14/73\*U
+.s1
+The \*Qlookout\*U and \*Qsonar\*U commands works in the same way as radar.
+.s1
+The \*Qmap\*U command will give you a
+map surrounding the current position.
+By default, it will be around the flagship,  but you may also
+specify a ship number.
+.EX <32.3: g 6,2> m 3
+.s1
+is equivalent to a \*Qmap\*U command. like
+this:
+.EX map 3 ls
+The \*Qmap\*U command works in the same way,
+you get a bmap instead.
+.s1
+The \*Qflagship\*U command will the change the flagship.
+By default, it will select next ship in the list, but you may also
+specify a flagship.
+.s1
+The \*Qdrop\*U command will drop mines using ships
+with mine capability.
+You can specify the ship number or fleet or groups of ships
+and the number of land mines on the same line: \*Qd 12/13 10\*U.
+An omitted unit number defaults to the flagship,
+for example \*Qd 10\*U drops ten land mines from the flagship.
+If you omit the number of land mines as well, the flagship will drop one
+mine.
+.s1
+The \*Qsweep\*U command will have the minesweepers in the navigating
+group search for mines in the current sector.
 This costs them the equivalent of 1 sector's mobility.
 .s1
+Note: the lookout, radar, sonar, drop and sweep commands use BTU's,
+just as if you'd typed them
+separately from the command line.
+.s1
 Since the <ROUTE> can be specified in the command line,
 simple ship movements are often typed as a single line, such as:
 .EX nav 19 jjjh
@@ -107,7 +138,7 @@ on interdiction missions (see info mission).  If your enemy has a
 stack of missiles on interdiction mission, then they will
 automatically fire one after another until all of your ships are sunk.
 The chance of missiles and planes hitting your ships is determined by
-the "worst" ship in your fleet (see \*Qbomb\*U for the chance of
+the \*Qworst\*U ship in your fleet (see \*Qbomb\*U for the chance of
 hitting).  Any damage incurred by the fleet is divided evenly among
 all the ships in the fleet which are in the same sector.
 .s1