noopen Internet Explorer 6 for Windows XP SP2 and later. Hides the Open or Run button on the File Download dialog box. This value requires the name attribute to be set with the DownloadOptions value.nosave Internet Explorer 6 for Windows XP SP2 and later. Hides the Save button on the File Download dialog box. This value requires the name attribute to be set with the DownloadOptions value.
noopen
nosave
>>1
[3]
<meta name="DownloadOptions" content="noopen">
[2] 後に noopen に相当する機能として X-Download-Options: が導入されています。
X-Download-Options: