I found a spell checker for Visual Studio that uses the MS Office Dictionary. At first it showed every 'FeaturePics' as a spelling error, along with 'img' and 'var' and a few more that are key words. I typed these words into a word document and did the “Add to dictionary” routine. Then I closed VS and reopened it and those words no longer came up as errors. The spell checker can be found here. At first it did not appear to work, but the 'Check Accessibility' in the next paragraph got both spelling and other errors to come rolling in.
In VS there is an item on the tools menu named 'Check Accessibility'. It compares your doc with what it claims to be. In Elena's case, https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd, and flags all the items that do not conform to the standard.
Really a lot of them are things like enclosing font attributes in quotes. It might be possible to do most of those with a couple of search and replace calls. I put in a bunch of /> tags that way, but did not try to do the more elaborate changes.