Rationale: Resizing the window containing a PE session generally causes the session to crash, or to start operating incorrectly. This is why it is important that the window be correctly sized before PE starts. (This resizing problem is between Chime and the browser, and is beyond our control.)

PE operates best in a window of at least 1024 x 768 pixels. It will operate in smaller windows, but the control layout will be less convenient, and you'll have to scroll more.

PE offers three methods for controlling the window size for new PE sessions. Select your preferred method from the menu labeled Window size for new PE sessions on the FrontDoor.

The method you select on the FrontDoor will be used in all future PE sessions, including those started from hyperlinks without using the FrontDoor. Your menu selection is saved as a cookie.

1. Full Screen: PE will use this method by default. New PE sessions will fill your entire screen. This is optimal if your screen is 1024 x 768 pixels or less. If your screen is larger than 1024 x 768 pixels, full-screen PE sessions are still recommended, but you may use one of the options below to set smaller windows for PE if you prefer.

2. Custom Size: The anticipated use for this method is when your screen is larger than 1024 x 768 pixels, and when you prefer not to use the full screen for PE sessions. You can set your custom PE window size as a percentage of your full screen, and then all PE sessions will automatically be that size.
   If your screen resolution is suboptimal in size for PE, or if you have set a suboptimal custom window size for PE, you will receive no warnings when you choose the "Custom Size" method. Therefore, if you use a screen size deemed suboptimal, and if you don't want to be warned that your screen size is suboptimal in every PE session, select the "Custom Size" method, set the size to the maximum percentages, and you won't be bothered.

3. Manual Adjust: This method allows you to adjust manually the size of the window for each new PE session, before the session starts. As you adjust the window size, it reports its size and warns you if the size is deemed suboptimal, but you can choose to use suboptimal sizes if you wish.
   The Manual Adjust method also offers a checkbox "put molecules on left". This reverses the positions of the control panels and the molecular image within PE. If you have a very large screen, you could start two Protein Comparator sessions, adjusting each to fill half of the width of the screen, putting the molecules on the left of the right Comparator session only. This produces a four-molecule comparator.

If your Windows screen resolution will be less than 1024 x 768 (or 800 x 600 for Macs) we recommend increasing your screen resolution. Here's how. If you can't or don't want to increase your screen resolution, we recommend reducing the browser's default font sizes to enable PE to fit better in the smaller window. Here's how.

Regardless of how you configure window size for PE, you may find it useful to specify the percentage of PE's window allocated to the molecular image frame. For more information, click the link Set custom molecular image width on PE's FrontDoor (just below the Window Size link).

• Netscape: Open the Edit menu at the very top, and select Preferences. Under Appearance, click Fonts. Change both font sizes (variable and fixed) to 8. Click OK. Now try PE. If the fonts are too small, try size 9 or 10.

• Microsoft's Internet Explorer: Open the View menu at the very top, and use the Text Size option to try a smaller font size.