帮我看一下下面的英文信件,具体说了那几个办法ECO具体意思

帮我看一下下面的英文信件,具体说了那几个办法ECO具体意思
If paying the $75 fee would cause undue financial hardship for your family,we encourage you to request a fee waiver.You should contact your guidance counselor for assistance in obtaining the waiver.
Information on the College Board fee waiver program is available at http://www.collegeboard.com/student/apply/the-application/922.html.Your counselor may use the College Board form,or your school's own form.If no form is available,your counselor may choose to write a personal letter testifying that he or she is familiar with your family's financial circumstances and believes payment would cause hardship.Letters may be sent to the Office of Admissions at 86 Brattle Street,Cambridge,MA 02138 (Attn:File Room) or fileroom@fas.harvard.edu.We do not open email attachments,so request should be in the body of the email.
If you submit a form signed by authorized school personnel,you can assume it will be accepted.If we have any questions,we will contact you.
We also accept ECO (Expanding College Opportunities) fee waivers.Students completing either application on paper must include the ECO fee waiver in the application package.Students completing the Common or Universal application online should choose "Other Fee Waiver" as a payment option and then mail in the waiver to the admissions office.

/>如果75美金的费用对您的家庭来说属于比较高昂的费用的话,你可以寻求你的辅导员帮助你申请减免收费.具体请看http://www.collegeboard.com/student/apply/the-application/922.html 

你的辅导员可以使用大学理事会的形式,或学校自己的形式.

若没有可用形式,也可以请你的辅导员写一封私人信件作证,他或她应是熟悉您家庭的财务状况,并认为支付会造成困难.

来信请寄剑桥,布拉特尔街86号招生办,MA 02138 （经办人：档案室）或电邮至fileroom@fas.harvard.edu 

我们不打开电子邮件附件,所以请求应该在电子邮件正文中.

如果您所提交的是由学校权威人士签订的,很大可能它会被接受.如果我们有任何问题,我们会与您联系.

我们同样接受ECO（扩大大学就业机会）的费用豁免.学生在纸上完成任一应用程序必须包含在应用程序包的的ECO费减免.

完成共同或普遍的在线申请的学生,应选择“其他费用”作为付款方式,然后邮寄到招生办公室豁免
ECO没查到具体中文是什么.但是按照括号里的EXpanding College Opportunities可以理解为是扩大大学就业机会.