We are getting HUGE horizontal ie-diagrams, how can we make them stack vertical?

Question

Below is the URL for a typical ERD for us - a lot of tables.

How do we stack these so that the tables go left to right vertical stack instead of all horizontal stack?

http://www.plantuml.com/plantuml/svg/jPHDQnin48Rl-XL3BeL2WXtR-IWXf7XJ6bhtaFHUP6didLeVo-niWqdwtxiRBBPAI-93zY3GizBeqQk5kQf5ipJUAVKEIh88KYBKLHJrH8ROEEmMzQz85YgEIuU-XdkI4dHOExHWEDxNi48KLMyeL9gr1qS1PLiXH9OoAeL1IBPmyB5faTjf4KtZCSW1w1fmD8O71V2-TNo0qFWbCbnSh34WQq5xUQb-zqSKDxQRhmYvtfKVlrOES7ZOxVZ7_sEr-RlcqvTdhgyKDcYl7NQRasuoc6vEeeLYIARflgRdDtrDL93fF9gttv5zqis6qjr6XqboCfHaeQkAmdgdEHte9osm-vx2dErjITTx-VHRN25ZC3YFGJYwv3b_OyzJw9HYF1hehURH-nY-QO_9D1x8T6r9-Zn3zOFFXApPb6IqMw3eGelUAIT3FM59pjuKATdU3U5_LttPTDSiVwAHXHP1hk-aMUwSipUEfhf-__XuT1GVkjwTuqIreyTfZhCSJ_BQKzME7izoFCysZqSvZdCypd6Ysj7ZD5-TANM5mJRU_G40

Answer 1

Have you tried left to right direction directive ?

Example

Answer 2

A possible option is to change link's lenght :

http://www.plantuml.com/plantuml/uml/jPJVQzj03CVVxwyGVHaCEk8bwOzHIaVSiR9b3-tUnyMdn5hkXv7bbT3kVv-ztU4cAsqUOeFWlZf97-aCkgf5ipJEgZTGaa6G4g6kWgY_gY0kBAhsKlyAPA3YiB3eQhWdAK7xbKK31OVx6fQ8eker-KgpTc39esmgXC1I1gNG2ya6ZZushUJsc8UYSQtt27GDEChWGG6yRHaVm3TkWGmN5olqo5hGN5wgtts9_CPqvoKXrp7z_Mlf0CV7NSH__1_BzTESJrzsM5_9hz5SM-o24suy66v6eeM2JwJ9lgJTJby3vLHq7CsRxyWkuQP3uMw3nGGv6GeorrL5VXKnfmFzf3bs_ZJCsTwKrDxBrMznYOo-m5dmmi4cplc1EV-6ZjMpqK1lDGlE1VzDEqoaR23IjI7fvnbg7tmcPCr5IOMsSnITQz4HEHxg2KkovYPFa-sz49vhzMNINRFuYONCjGXoVIVD8ZAd1nvDTVl-yV5TzuM7Rdr7Jz9ZrTeJFOawokcsF8dPKPwgrdfvjYtFUrJ2PwEj0bcMPBhVQIyRgzRw-Cbs-bHTeJUDity0