Page URL: https://www.openssl.org/docs/man1.0.2/man1/crl2pkcs7.html

Section: -certfile filename

Error: Paragraph says "form" where it should say "from":

original:

specifies a filename containing one or more certificates in PEM format. All certificates in the file will be added to the PKCS#7 structure. This option can be used more than once to read certificates form multiple files.

fixed:

specifies a filename containing one or more certificates in PEM format. All certificates in the file will be added to the PKCS#7 structure. This option can be used more than once to read certificates from multiple files.