If you want to allow any kind of letters (not only A-Z) you're looking for the letternumeric validator.

Validate qty of checkboxes in a group (same name) have been checked, using min, max or range.

General considerations for handling HTTP requests and responses in Web DAV are found in Section 8.¶While the status codes provided by HTTP/1.1 are sufficient to describe most error conditions encountered by Web DAV methods, there are some errors that do not fall neatly into the existing categories.

This specification defines extra status codes developed for Web DAV methods (Section 11) and describes existing HTTP status codes (Section 12) as used in Web DAV.

Thymeleaf is a modern server-side Java template engine for both web and standalone environments, capable of processing HTML, XML, Java Script, CSS and even plain text.

Finally, this version of Web DAV introduces precondition and postcondition (Section 16) XML elements in error response bodies.¶) for property names and some values, and also uses XML to marshal complicated requests and responses.Examples of such templates might be text emails or templated documentation.Note that HTML or XML templates can be also processed as template mode will allow the processing of Java Script files in a Thymeleaf application.Prepare high level and detailed technical specifications for the projects in accordance with PLC, security and architecture documentation objectives.Develop and deploy solutions and test them for accuracy.