Example SP output for an HTML document

• Example showing only validation (Notice that my document does not strictly comply with the HTML 2.0 standard. I am unsure why there are errors with the centering tags.)
• Example showing markup normalization (Notice uniformly capitalized markup and insertion of missing end tags. Also evident is the removal of the SGML DOCTYPE header and the comment at the top of the document.)

Validation example

~/article_ex penguin.WPI.EDU> nsgmls -chtml.soc -s /cs1/csgrads1/jes/public_html/html/alpha.html 
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:15:7:E: element "CENTER" undefined
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:56:9:E: there is no attribute "SIZE"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:56:17:E: there is no attribute "WIDTH"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:79:7:E: element "CENTER" undefined
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:86:20:E: there is no attribute "HEIGHT"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:87:19:E: there is no attribute "WIDTH"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:92:13:E: there is no attribute "HEIGHT"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:93:12:E: there is no attribute "WIDTH"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:98:13:E: there is no attribute "HEIGHT"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:99:12:E: there is no attribute "WIDTH"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:104:13:E: there is no attribute "HEIGHT"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:105:12:E: there is no attribute "WIDTH"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:110:13:E: there is no attribute "HEIGHT"
nsgmls:/cs1/csgrads1/jes/public_html/html/alpha.html:111:12:E: there is no attribute "WIDTH"
~/article_ex penguin.WPI.EDU>