An icon is a small image 
that gives information about
a topic in a graphical, easily understood way. You can assign an icon
to multiple topics, and each topic can have more than one icon, but you
may not repeat the same icon more than once on a single topic. You can
add or remove icons on topics using the Add
Icon Marker 
toolbar button or from the Map Markers
or Library panes.
Hint: If you prefer not to display icons but want to avoid removing them you can hide them using the View - Show / Hide command in Map view. In Outline view you can turn off the icons column - right-click on the column header and uncheck Icons.
Every map begins with a built-in Map Markers list : a set of available markers and their pre-defined meanings. The markers are stored in groups in the Map Markers list (to see it open the Map Markers Task Pane). When you add an icon marker to a topic you can select an icon from the current map markers list or choose a different icon from the Library.
You can choose a different pre-defined list of markers to use with the map in the Template Organizer's Map Marker Lists pane, or you can modify the Map Markers list to assign different meanings, add or remove markers, and create new marker groups.
Hint: You can also use icons as criteria for selecting topics and filtering the map.
To add an icon to a topic:
Select a topic or topics that you want to assign the icon to.
Do one of the following:
Click the Icon
Marker toolbar button
Right-click the topic and choose Icon Marker.
In the icon marker picker select the icon you want to assign to the topic. Once an icon is added, you can hover over it to see its meaning. You can change its meaning in the Map Markers pane.
Notes:
Some icons are mutually exclusive: Only one icon from that marker group
can be added to a topic. If you attempt to add a second icon from the
same group, it replaces the first icon. These groups are shown in the
Map Markers pane as 
(mutually exclusive). You can change
this attribute. You can add multiple icons to a topic from a group that
is non-exclusive - 
.
If the icon you choose was already assigned to a selected topic, it is
removed. This works as a toggle, so a second click on the icon will add
it to all selected topics.
To display larger icons on the map, enable the Tools
- Options - Visual
Effects -
Show larger icons... option
If you don't see the icon you want to use, click the More Icons... button to open the Library pane.
Click the icon in the Library pane that you want to add to the topic or topics.
Hint: to see more detailed icons in the Library right-click and select Show Large Previews.
Note: If you select an icon from the Library pane, it is automatically added to the General icons group in the Map Markers List.
Shortcuts:
You can add Priority icons using shortcut keys: Ctrl+Shift+1 for Priority
1, Ctrl+Shift+2 for Priority 2 etc. Ctrl+Shift+0 removes all Priorities
from the topic. You can set shortcut keys for other icons in the Library
pane by right-clicking and choosing Shortcut
key from the context menu commands.
You can copy an icon from one topic to another by dragging it.
You can add a marker to the selected topic(s) by clicking on it in the
Map Markers Pane.
To change an icon on a topic:
Once you have added an icon to a topic, you can change it in several ways:
For icons that belong to a named group, click on the icon to cycle to the next icon in the group.
For icons that belong to a named group, right-click on the icon and choose a different marker from the same group (these are displayed)
Right-click on the icon and choose Replace With to select a different icon from the Map Markers list.
Right-click on the icon and choose Modify to change the icon's meaning. This new meaning will show in the map legend.
Right-click on the icon and choose More Icons to replace the current icon with a new icon from the Library. The new icon gets added to the General icons group in the Map Markers pane.
To copy an icon:
Click on the icon and drag it to a new topic, then drop it.
To remove an icon:
Right-click on the topic's icon and choose Remove or choose Remove All Icon Markers to remove all the topic's icons.
Shortcuts: Ctrl+0 removes all markers; Ctrl+Shift+0 removes all Priority icons.
If you export your map to web pages an icon legend pop-up is automatically included in the export. You can disable this by using the options to customize your web pages. The Icon Legend pop-up option is in the Show section on the Advanced Settings page.
For PowerPoint export, you can use the icons on your map as bullet characters on your slides. This is controlled in the PowerPoint Export Format Settings dialog.
The task icons (priority, task complete %) are dynamically linked to the task information assigned to the topic. These work in a special way:
If you assign task info to a topic, the corresponding task icons appear automatically on the map and are added to the Map Markers List (if they were not already included) in the appropriate group. These icons remain in a dynamic state until you name them. If an icon is dynamic its name is grayed. If it is not used on the map it is removed from the marker list. You must name a dynamic icon if you want to keep it in the list regardless of whether it is used on the map.
If you add a task icon (priority, task complete %) from the map marker picker the corresponding task info is automatically assigned to the topic.
You can "cycle" the priority and % complete task icons just like other icons. Click on the icon to change it to the next available priority or task complete (%) setting. You can tailor the markers list in the Map Markers pane to contain only those priorities and task complete (%) settings you want to use. For example, you can include just the 0%, 25%, 50% and 100% icons in the list rather than the whole continuum of settings. In this way you can avoid cycling through all the unused icons.
