Entering text in USAPhotoMaps

After you have an aerial photo displayed, you can add text labels to different
features when the image is displayed at the 1- or 2-meter zoom levels. To enter
a text label
1. Move the mouse cursor to the location where you want the text to start.
2. Hold down the Shift key.
3. Move the cursor in the direction you want the text to be aligned. A line is temporarily drawn as you move the cursor. For example, if you draw a line at a 45-degree angle, the text will flow at a 45-degree angle.
4. Release the Shift key.
5. In the dialog box that appears, type in the text label and click OK.
A list of all the text labels is displayed.
Text in a label is limited to 60 characters and can be edited or deleted by choosing Text➪List.
You can set the text color by choosing File➪Preferences➪Colors. The Color Preference dialog box, which isn’t all that intuitive, uses a series of radio buttons that correspond to red, green, and blue values. Your best bet for choosing a color you’d like is to enter some text and then display the Color Preference dialog box. When you select different combinations of color radio buttons, the text you entered changes color.

Enhancing contrast in USAPhotoMaps

One of the things you’ll notice as you start to view aerial photos is that the contrast might be lighter or darker with certain images. This has to do with the amount of sunlight when the photo was taken and the background color of the terrain.
To enhance less-than-optimal contrast, USAPhotoMaps has a nifty feature that lets you adjust the contrast of the photos displayed onscreen by either lightening or darkening them. This can really enhance detail in a photo.
You can control the contrast of a photo by using these keys:
_ Lighten: Press the B key.
_ Darken: Press the D key.
You can also set contrast by selecting Brightness from the View menu, including restoring the contrast back to its default setting.