There are, however, standards for capturing, documenting, and preserving images. The York Doomsday Project Copyright Copyright laws do restrict the right to copy texts among other things, in any manner, including electronically. It is possible to make copies of more recent material, if you have permission, you hold the copyright, or are making a copy for personal or educational use. All of these packages come with their own textual analysis software. You can also develop customized searches.
Chances are that some documents available commercially are also on the internet.
Commercial electronic texts tend to represent a broader group of authors, including women and persons of color, as well as a broader selection of materials, since they sometimes purchase rights to texts currently protexted by copyright. Attentiveness to editorial matters, like selecting canonical or original editions, clearly indicating editorial choices, and standardizing the electronic format and encoding, and enhanced functionality, such as searching and annotating, are typical features of commercial collections. Commercial electronic texts do, however, generally require proprietary software. This means that even though the text may be encoded perform across platforms, its implementation is limited to one platform. Further, commercial electronic texts and the software that drives them tend to limit the amount of text you can save to disc or print.