HOW TO INSTALL ADOBE READER 6
1. Uninstall all previous versions of Adobe Reader.
a. Click “Start" > “Control Panel" > “Add/Remove Programs".
b. Select “Adobe Reader X.x", where X.x is a previous version.
c. Click on the “Remove" button and follow all prompts to uninstall.
d. Repeat for each previous version found.
2. Determine your version of Microsoft Windows.
a. Click Start, then right-click on “My Computer".
b. Select “Properties" from the sub-menu.
c. The properties dialog will display your version of Windows, for example:
NOTE: Your computer must have at least Microsoft Windows 98 Second Edition installed to use Adobe Reader 6. If you are using Microsoft Windows 98 or Windows 95, you will not be able to use Adobe Reader 6. In this case, please install Adobe Reader 5, which will automatically be chosen for you in the following steps. Note that you may observe peculiar behavior with Adobe Reader 5 on the NRS website, but without any version of Adobe Reader, you will not be able to open and download NRS forms.
Answer the following question according to the text above:
MUST é um auxiliar modal que indica que algo