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60 Number 43, Fall 2002 cartographic perspectives of the CD-atlas (especially the "non-Oregon" readers) will likely master knowledge of place and feature locations in the state more efficiently than will readers of the printed atlas. This seems even more certain since the reader of the CD-atlas is only a button-click away from the extremely conve- nient state map of Oregon that has already been mentioned. While the printed atlas suffers from lack of such a handy reference map, especially among the thematic maps, the CD-atlas provides this in a superb fashion. The importance of being able to cross-reference or compare maps was briefly discussed in the review of the printed atlas. Since this is so fundamental in a reader 's use of an atlas, it deserves a second mention. In a conventional atlas, cross-refer- encing or map-comparison often becomes an onerous exercise of page number memorization, page marking, or repeatedly return- ing to the Table of Contents. The CD-atlas however, provides tools to considerably increase the ease and efficiency with which cross- referencing or map-comparison is performed. The CD-atlas furnish- es easy-to-find buttons for click- ing and quickly moving from one map to another. One can simply use the "clickable" Table of Con- tents however the designers have added an extra tool very useful for moving between maps. There is a button at the top of the screen labeled "Compare". This button al- lows the reader to instantly switch between two different maps with a single click. Cross-referencing or comparison by use of maps has never been quicker or easier. The maps contained in the CD- atlas maintain the high graphic quality of the maps found in the printed version. Of course the finest lines and most subtle color differences found on the printed page suffer somewhat when viewed on a computer monitor and can differ markedly when viewed on different monitors. However given the limitations of RGB monitor viewing, the maps remain graphically pleasing and seemed impressively similar to the printed versions. Quality control appears to have been care- fully conducted. While comparing several maps between the CD-at- las and the printed atlas, only one map in the CD-atlas was found to be missing a type label that was included on the same map in the printed atlas. The contents of the second disk in the CD-atlas set include aerial photos from selected loca- tions in Oregon. These locations are: Alsea Bay, Astoria, Belknap Crater, Crater Lake, Hells Canyon, Hood River, Mount Hood, Port- land, Smith Rock, Umatilla, and Warner Valley. No rationale was visible to explain the inclusion of photography from these specific locations. One could perhaps assume this photography covers specific physical or environmental features in Oregon. Since they are from different regions in the state, perhaps the purpose of the photos is simply to demonstrate Oregon's ecological diversity. This section is not included in the printed atlas. Similarly, the printed atlas con- tains a reference section not found in the CD-atlas. It has long been this reviewer 's preference to read text and view graphics on a printed page rather than on a monitor screen. Initially, using the two versions of the Atlas of Oregon did not alter this prefer- ence though it was soon evident that the Atlas of Oregon CD-ROM possesses distinct advantages when compared to its printed counterpart. One of its advantages lies simply in the fact that such a well-produced atlas exists on CD- sized media. The convenience of having the Atlas of Oregon on two compact disks provides a tremen- dous payoff in terms of the den- sity of good quality information provided per amount of storage "real estate" required. The more the CD-atlas was used, however, the more its inter- active qualities became valued. This aspect makes using the atlas both enjoyable and educational. In the opinion of this reviewer, this is the most important way in which the CD-atlas complements the printed version of the Atlas of Oregon. It allows the reader to manipulate images, view the data at varying scales, easily compare between maps and even print base maps for one's own use. These capabilities are what carry the atlas beyond merely being a reference tool to truly serving in the capacity of an educational tool. Given the quality of the CD- atlas, not many suggestions for improvement come to mind, however there are two minor items. Flexibility in the use of this atlas would be increased with the inclusion of a "minimize" option to allow users to more conve- niently use other software while keeping the CD-atlas active. Using the Alt-Tab or Command-Tab keys (Alt-Tab for Windows, Command- Tab for Macintosh) enables read- ers to alternate between different programs, however a minimize button located on the CD-atlas screen would be helpful. A second suggestion would be to place the "Next Section" button in exactly the same position throughout the atlas. This would allow the reader the option of quickly paging through the different sections of the atlas with his or her eyes remaining on the contents of the pages rather than having to shift to the top of the monitor to relocate a button because its location has shifted. Since the "Previous Section" button does appear to retain its position, the reader would have the option of going to the end of the material contained on each disk and quickly page toward the beginning. Again, these are certainly minor matters. In comparison to print atlases,

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