请问下MXD文件大小会莫名变大

<P>例如我又刚做了一个地图文档大小为3M左右，但是我重新进入，未做任何修改，单击了一下保存，MXD文档就变为45M了</P>
<P>有高手能解释下么？</P>

<P>The following steps permanently clear the Results tab in ArcToolbox. Previous geoprocessing results are available in the History toolbox, if needed. See the Related Information for more information on retrieving results from the the History toolbox.<BR><BR>Shut down ArcMap and open ArcCatalog. Go to ArcToolbox > Results Tab. In the Results tab, look for 'Current Session' and 'Previous Sessions'. If 'Previous Sessions' is not there, go to to step 4. If 'Previous Sessions' is there, go to step 3. Right-click 'Previous Sessions' > Remove All. Open the problematic MXD in ArcMap. Click File > Save As. Save the MXD to a new name. Check to see if the problem has been resolved. If it has been resolved, do not continue with the rest of the steps. If the problem persists, go to step 7. Go to ArcToolbox > Results Tab. In the Results tab, look for 'Current Session' and 'Previous Sessions'. Right-click 'Previous Sessions' > Remove All. Click File > Save As. Save the MXD to a new name.</P>
<P>刚找到的，我自己还没看</P>

我也有同样的问题..不知道怎么办 求高手指点!<br>