Where to look if the Splunk Style Guide doesn't answer your question

The Splunk Style Guide covers issues specific to Splunk documentation, but standards for grammar, spelling, style, and content design are extensively covered in a number of other references.

If you can't find what you're looking for in the Splunk Style Guide, refer to these reference materials:

Writing standard	Resource
Best practices for product and user interface text	(Internal) Magnetic Design System https://magnetic.cisco.com/0a43ab5cd/p/583e31-content-design
Grammar and punctuation for nontechnical terms	The Chicago Manual of Style http://www.chicagomanualofstyle.org/home.html
Spelling, definitions, and capitalization	Merriam-Webster Dictionary http://www.merriam-webster.com
Other technical documentation style issues	Google Developer Documentation Style Guide https://developers.google.com/style Microsoft Style Guide https://docs.microsoft.com/en-us/style-guide/welcome

Writing references

The following references can enhance your writing and understanding of best practices in a variety of technical communications:

Reference	What's good about it
Every Page is Page One by Mark Baker and the Every Page is Page One website	Every Page is Page One provides guidelines for technical writers to create standalone, user-centric documentation that doesn't rely on a traditional hierarchical structure.
Writing Is Designing: Words and the User Experience by Michael J. Metts and Andy Welfle	Writing Is Designing offers suggestions for collaboration between writers and designers in an effort to create user-centered experiences when designing digital products.