There's no reason for end users to utilize these functions, but CRAN requires it to be documented.
Usage
# S3 method for class 'summ.lm'
knit_print(x, options = NULL, ...)
# S3 method for class 'summ.glm'
knit_print(x, options = NULL, ...)
# S3 method for class 'summ.svyglm'
knit_print(x, options = NULL, ...)
# S3 method for class 'summ.merMod'
knit_print(x, options = NULL, ...)
# S3 method for class 'summ.rq'
knit_print(x, options = NULL, ...)