Original sentence: Considerable care must be exercised when creating HTML pages with special characters outside the range of ASCII to ensure two goals: the integrity of the information stored in the HTML document, and proper display of the document by the largest possible variety of browsers.Decimal and hexadecimal HTML character references can also be used, based on the Unicode numeric code for the character encoded.For example, λ can also be represented as a decimal-coded character reference as.In addition to native character encodings, characters can also be encoded as HTML entities, using the encoding format derived from the use of entities in SGML.It is important to point out that successful viewing of a page is not necessarily an indication that it is encoded correctly.The other method is for the HTML document to include this information at its top, inside the  element.This presents few problems for English-speaking users, but other languages require characters outside that range for everyday use.This use of the '&' character as an escape character for character entities means that literal '&' characters in HTML need to be encoded as an entity themselves, as
Edited sentence: Considerable care must be exercised when creating HTML pages with special characters outside the range of normal ASCII to ensure two goals: the integrity of the information stored in the HTML document, and proper display of the document by the largest possible variety of browsers.Decimal and hexadecimal HTML entities can also be used, based on the Unicode numeric code for the character encoded.For example, λ can also be represented as a decimal-coded entity as.In addition to native character encodings, characters can also be encoded as HTML entities, using the encoding format derived from the use of character entities in SGML.It is important to point out that successful viewing of a page is not necessarilty an indication that it is encoded correctly.The other method is for the HTML document to include this information at its top, inside the HEAD element.This presents few problems for English-speaking users, but European users require characters outside that range for everyday use.This use of the '&' character as an escape code for character entities means that literal '&' characters in HTML need to be encoded as an entity themselves, as