{"text_format":"2","workbook":"xlsx","n_sheets":1,"sheets":["Sheet1"],"not_rendered":{"charts":0,"images":0,"macros":0,"external_links":0,"defined_names":0,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"run_cost":"one","rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900"}

{"sheet":"Sheet1","index":0,"n_rows":14,"n_cols":12,"rows_kept":14,"cut":false,"hidden":false,"merged":[]}
[{"$nulls":6},"功能点","1级(开放文档)","2级(涉密文档)","3级(机密文档)","4级(绝密文档)","功能说明"]
[{"$nulls":6},"预览","√","√","√","√","在线预览"]
[{"$nulls":6},"下载","√","√"]
[{"$nulls":6},"一次分享",null,null,"√",null,"仅能分享一次，接收者不能再次分享"]
[{"$nulls":6},"无限分享","√","√",null,null,"接收者可继续分享给其他人员"]
[{"$nulls":6},"内容加密",null,null,"√","√","对文档本身进行私有算法加密混淆，仅本软件能解密打开"]
[{"$nulls":6},"安全访问二次认证",null,"√","√","√","访问文档时需要再次输入登录密码"]
[{"$nulls":6},"私有安全访问码",null,null,null,"√","访问文档时需要输入自定义的访问密码，创建文档时定义"]
[{"$nulls":6},"内容防复制","√","√",null,null,"预览状态下复制文档内容到剪贴板"]
[{"$nulls":6},"防拍照",{"$nulls":4},"预留功能，实现难度大"]
[{"$nulls":6},"删除","√","√"]
[{"$nulls":6},"创建","√","√","√","√"]
[{"$nulls":6},"移动/复制","√","√","√"]
[{"$nulls":6},"打印"]