The DumpLoad template will generate a program to dump all your ISAM files (TopSpeed, Clarion, etc) to CSV files.
@RobertoArtigas GitHub also has templates to convert to SQL. I like going to a format that supports Types so things like Numbers, Dates and Times are explicitly identified with that Type. A template approach can see a LONG has an @D or @T picture in the DCT and format the output as y-m-d versus a Clarion date serial number.
The SQL tools also create a schema that helps understand the data model so hopefully less explaining on your part of 200 files with their relationships and types. You could use one of these SQL tools to generate the schema as your documentation. It is a text file that is human readable or could be run in a database then viewed in the DB tools.
DBase seems like an option and can be opened in Excel. It seems too old to mess with.
The DUMPLOAD template will take all your ISAM tables and EXPORT them as CSV comma delimited files. This template will also IMPORT them and restore your table with previous data. This will give you and additional way of saving data for backup and restore purposes in a TEXT like format.
The EXTENSION template generates all the procedure code automagically for each table into sequencialy numbered CLW modules. It will then add one more module that puts everything together.